Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
Q:1/2=90
M:2/2
K:A
['a2 ed cAec', '(c/B/A) EA cAec']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:A
 e | a2 ed cAec | Bcde fBbg | a2 ed cAec | dfed cAA :| e | (c/B/A) EA cAec | Bcde fBed | 
 (c/B/A) EA cAec | dBed cAAe | (c/B/A) EA cAec | Bcde fBed | cefd eabg | afed cAA |]  