Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:2/2
K:D
['BAFA D2 FA BA (3Bcd e2 de', 'faaf egfe']  
X:1
L:1/8
M:2/2
K:D
 FA | BAFA D2 FA | BA (3Bcd e2 de | faaf egfe | dfed B2 dA | BAFA D2 FA | BA (3Bcd e2 de | 
 faaf egfe | d2 f2 d2 :: fg | afdf a2 gf | efga b2 ag | faaf egfe | dfed B2 dA | BAFA D2 FA | 
 BA (3Bcd e2 de | faaf egfe | d2 f2 d2 :|  