torah is a song israel sings constantly

"so now, write this song for yourselves and teach it to the children of israel..."
devarim 31:19

ramban: and [scripture] calls it a song because israel will recite it constantly with song and with melody.

http://www.youtube.com/watch?v=b_dL3EaJJNA
john coltrane body & soul
i was listening to this, and had to get the ramban and look at ha'azinu, where torah is called 'a song/shirah'