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Download version 2.1 (released August 4 2002)
Intel ZIP Archive 6.5M (requires BeOS Release 5)

Sequitur is a BeOS-native MIDI sequencer. It allows you to record, compose, store, and play back music from your computer. It does this by providing you with tools to manipulate MIDI, a protocol that defines standard musical events, such as playing a note or selecting an instrument.

Careful attention has been paid to the interface. It has been designed to be both comfortable for experienced electronic musicians and easy for beginners. Sequitur provides extensive features for manipulating performance data --it allows destructive, non-destructive and even interactive processing. Extreme flexibility is provided through a series of layers. At the top layer, a Sequitur user makes use of tools and MIDI processing facilities provided by the system. As users become more experienced, they can dig deeper into the capabilities, writing their own tools, constructing their own MIDI processing filters, or even writing their own C++ add-ons.

Sequitur features:

• Unlimited number of MIDI tracks
• MIDI resolution of 6720 PPQN
• User-settable undo level
• Familiar tape recorder-like transport controls
• Basic loop functionality
• Individually-sizeable tracks
• Works with Standard MIDI Files -- retain all your unique Sequitur settings while easily sharing sequences with other software
• Full graphic editing of standard MIDI data
• User-definable devices
• Destructive and non-destructive MIDI processing. Stack up any number of processing filters. Connect filters between different tracks
• Includes large selection of MIDI filters
• MIDI processing is add-on based -- developers can write their own. All development tools are freely available
• Includes filter editor for constructing new filters
• Track windows allow operations on multiple tracks simultaneously
• Interactive MIDI processing, integrated with traditional track editing tools for unlimited possibilites.
• User-definable tools. Create a pencil tool with echo. Drag events in key. Carve control changes out of notes
• Ships with a large selection of tools for interacting with MIDI data
• Integrated bitmap editor for customizing the look of your devices, tools, and filters
• Extract rhythm and progression information from one sequence and impose it on another
• Dynamic documentation rebuilds itself based on the installed components
• Embed portions of your hard drive into the File menu -- no more searching through file dialogs
• Skinnable

History

Sequitur 2.1 Release Notes

Features

• Important fix to file IO that prevents data corruption.
• Dissolve filter could cause crash when operating on notes with extremely short durations. (thanks to David Shipman)
• New tool bar ARP Curves (select Tool Bars->Show->ARP Curves in a track window) contains new tools for shaping events. Each tool is documented in the Tool Guide, but in general they are used to shape control change, pitch bend, tempo and velocity events (and notes if you're feeling creative), and the curve can be altered by pressing the 'z' and 'x' keys.

  All curve tools make use of a new tool seed for drawing bezier curves; see section 6.3.2. of the user's guide for an explanation of the Curve seed.

• New menu items in the Song window: Edit->Expand Marked Range and Edit->Contract Marked Range. These items are only active if the loop markers are on. The Expand command shifts everything from the left marker to the end of the song over by the total loop range. The Contract command deletes the area within the loop markers, then shifts everything after the right marker left by the total loop range. If no tracks are selected, the entire song is shifted. Otherwise, only the selected tracks are affected.
• System exclusive commands can now be added to devices. There is no user interface for doing so, although developer tools are provided here. Currently, the E-mu Proteus 2000 and E-mu EOS devices include sysex commands for controlling the FX.
• A new page has been added to the Preferences window, Views. This page lets you set the height for the various views in Sequitur, such as pitch bend, control change, etc.
• Multiple instances of the same MIDI device are given unique names. For example, two instances of SynC Modular will be named "SynC Modular 1" and "SynC Modular 2" so they can be accessed independently. (thanks to David Shipman)
• In the track window, holding down the CTRL key now accesses an alternate set of active tools. (Assign these tools by holding down the CTRL key and clicking on the desired tool)
• Right mouse button can now be mapped to any tool. (thanks to David Shipman)
• The Vaccine.P and Vaccine.V filters have been deprecated (although they are still available here). They are replaced by the Vaccine filter. In addition to injecting a motion into the pitch and velocity of notes, this new filter can inject it into control change, pitch bend, tempo change and channel pressure events. The new tool Broken Down Line uses this filter.
• Note to filter developers: The filter API has changed. You will need to recompile your filters.

Sequitur 1.1.2 Release Notes

Features

• New strip view: Velocity.
• Primary views in the track window can now zoom on the Y axis. Use the same zoom control, located in the bottom right corner of the window.
• The Select tool now moves events if you click on a selected event.
• Hybrid view now allows you to set the number of notes between the treble clef and bass clef.

Fixes

• Fixed crashing bug that occurred when using the right arrow key to select events.
• Fixed problem that could occur to the end time of the second of two overlapping notes.
• Performance improvements.
• Miscellaneous minor fixes for the hybrid view.

Sequitur 1.1.1 Release Notes

Features

• Looping. Both the Song and Track windows now contain a button that activates loop markers in the measure control. When the loop markers are activated, then playing the song or track will result in only the looped area playing.
• Added a rewind button to the song window. This has obsoleted the Play From Start button previously available, although that function is still available by pressing 0 (zero) on the numeric keypad.
• New filter: Pandemic. This filter replaces Random Control, which is now obsolete and will be removed in future releases.
• New filter: Riffed Off. This filter is used to generate beats.
• New filter: Vaccine. This filter alters the velocity of notes based on the time signature.
• These filters have new or improved interfaces: Controller Envelope, Echo, Metronome, Quantize, Unquantize, Velocity.
• The time view now includes hours, minutes, seconds, and milliseconds.
• New preference: Track windows follow playback position. This preference causes all open track windows to scroll with the current song position.
• Added Apply to Track option to the property menu of filters in the output pipeline. This operation causes the selected filter to process the entire track, then removes the filter from the pipeline.
• The song window has a new menu item, File->Functions->Program Change Report. This menu item opens a window displaying a list of program changes for each device in the song.
• New menu items for editing track names.
• Pressing the Stop button in a track window stops playing any events in the primary view.
• Muted tracks appear in a darker colour in the song window.
• The number control has been cleaned up: Values can be typed in like a tracker view, i.e. click and wait. Alternatively, pressing the space bar will invoke this edit view.

Fixes

• Fixed crashing bug that could occur displaying lowest possible notes.
• Using Tracks->Delete Track from the song window could have problems if there were multiple tracks selected, and the selection was made lowest to highest.
• When playing live, output filters that were bypassed will still performed.
• 'Hotspot' for clicking filter property buttons was getting offset with each filter.
• Program events can be selected by clicking anywhere on the program name.
• Selecting single-line events like control changes has been tightened up.
• Highlighting portions of the song when clicking on track indexes has been cleaned up.
• Pitch and control change events were not playing during edit in certain situations.
• Any sustained notes are now turned off when the Stop button is pressed.
• Solo now overrides mute.

Sequitur 1.1 Release Notes

Features

• Undo / Redo. The history level can be set in the Edit panel of the Preferences window.
• Live play-through: All tracks now have an additional mode button, a blue button labeled 'P'. When P is enabled, any events received by the track's input filter are sent to its output filters and performed in realtime.
• A new window for editing tempo changes is available from Windows->Tempo in the arrange window.
• Time signatures can now be set, either by right-clicking on the measure control or selecting Edit -> Set Time Signature... .
• New strip view: Channel aftertouch.
• New filter: Metronome. Place Metronome in any output pipeline to hear a metronome click with that pipeline's channel and program settings.
• Additional keyboard commands: Holding down CTRL while using the Arrow keys moves the selected events in the appropriate direction; Holding down OPTION while using the Arrow keys transforms the selected events similar to using the Wand tool; DEL key deletes the selected events.
• When using the pencil tool, if SHIFT is held down while creating new events, those events are now added to the current selection.
• The Open From Query preference now allows you to use folders in addition to queries. If you simply want to embed a specific folder in the arrange window's File menu, this is much faster and easier than using a query.
• New menu item Edit -> Stop All Notes in the arrange window stops playback and turns off any stuck notes.
• The pencil tool behaviour when operating on control change, pitch bend, and channel aftertouch events has changed: Before, dragging up and down had no effect; now, dragging up and down reshapes all the events together.
• The Filters window is now available from the Windows menu in the track window.
• In the Filters window, filters that are both input and output appear as a single filter.
• Note for developers: The filter API has changed. You will need to add a second argument to HandleEvent() (see any of the example filters for the argument) and recompile.

Fixes

• Bypassing a filter is now retained after saving.
• The eraser tool's Gradual property was not working.
• Miscellaneous problems with the piano roll scrolling while working in the strip views.

Sequitur 1.01 Release Notes

Features

• Added 64th value to Quantize edit control.
• Added ability to reshape control changes and pitch bends by clicking and dragging with the Wand tool.

Fixes

• Thanks to Dan Walton for pointing out that none of the example filters actually compile. If you still have problems compiling the examples with this release, I'd appreciate if you'd drop me a line as soon as possible.
• Fixed bug recording from Q and other similar software: These programs supply Sequitur with a time of 0 for the events, which was not being handled properly. These times are now translated into system time. Note that in the case of Q, you need to set the channel of Sequitur's Q input filter to 2, 3, or 4. Also note to authors of these apps, you might consider supplying times with these events. This would allow Sequitur the chance to deal with any latency problems that might have occurred.
• Fixed bug during Sequitur shutdown which had unknown consequences on the MIDI server.

Version 1.0 (14 September 2000)

Initial freeware release.

All content copyright ©2000-2001 Angry Red Planet.