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.
What is new in this release:
Fixed exporting midi track names (Alexis Archambault)
Active dropping documents on the main frame on all OSes (Alexis Archambault)
Improve look of loop button on Linux when using wx 2.9
Add setting to remember window location
Make Aria work correctly in OpenGL mode on Linux
Move config file location (to ~/.config on Linux, out of the registry on Windows)