timidity -iA -B2,8 -Os -EFreverb=0
sudo modprobe snd-virmidi
amidi -l で確認
aplaymidi -l で番号確認
aconnect 20:0 128.0

参考
https://jannewmarch.gitbooks.io/programming-and-using-linux-sound-systems/content/MIDI/JavaSound/UsingTiMidityinsteadofthedefaultGervillsynthesizer.html
http://tldp.org/HOWTO/MIDI-HOWTO-10.html
