All the songs on this page were mastered using Ardour 3 and the Jamin plug-in:
http://www.bretts-music.com/listen
Ardour was involved in various places throughout the project, particularly for editing vocals. (Ardour has features that let you nail timing, etc.)
Six of the tracks were predominantly composed in LMMS (an unrelated piece of Linux audio software) and two were predominantly composed with Ableton Live 9.
At the time these were composed, Ardour 2.8 lacked MIDI capability – so alternatives were used.
Even so, all 8 tracks had either Ardour 2.8 or Ardour 3 involved in some stage of the process.