Yes, Awaken The Master is JM. (which could be found out by freezing some frames). Similarly, Transcending Time is John as well (as IM is), which could be found out like that as well.
So, what is known as of now is:
TA: James
IM: John
TT: John
ATM: JM
AVFTTOTW: John
(I do personally hope Machini wrote some lyrics though, I liked R137 (lyrically speaking), so that would be nice.)