Aria Maestosa is an open-source (GPL) MIDI tracker/editor.

It lets you compose, edit and play midi files with a few clicks in a user-friendly interface offering keyboard, guitar, drum and controller views.

With Aria Maestosa, you get to see MIDI data per measure, or per track and you can utilize either a score editor or a specific instrument editor.

Changes in v1.4.8

• Fixed instrument changes bug
• Better end of file detection
• Lyric editing support
• Correctly handle lyrics events when adding or deleting measures
• Allow deleting instrument through a contextual menu
• Preserve most recent controller values when deleting measures
• Metronome indicates starts of measures

Changes in v1.4.7

• Workaround wxWidgets bug that caused spinners to disappear on OSX
• BugFix for .MID and .MIDI files (upper-case extension)
• Allow navigating between notes with tab and shift-tab
• Reorganise preferences a bit
• Bugfix for issue when deleting soloed track

Changes in v1.4.4

• Bugfix for looping bugs
• Bugfix for magnetic grid dropdown menu
• Bugfix for bug preventing the name of the tempo controller from showing up
• Bugfix for assertion failure on right-click
• Bugfix for bug where the config file could get corrupted