Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:2/2
K:G
['DEGA BABd', 'Bc dg g2 ag g2 bg g2']  
X:1
L:1/8
M:2/2
K:G
 DEGA BABd | eg g2 agea | gedg edBd | c2 Bc AGEG | DEGA BABd | efge agea | gd d2 edBG | 
 AcBA G2 Bc || dg g2 ag g2 | bg g2 edBe | dB B2 GA (3Bcd | gedB AGEG | DEGA BA (3Bcd | efgb ae e2 | 
 gedg edBG | AcBA G2 z2 ||  