Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:2/4
K:C
['cGGE/F/ GG G2 A/G/F/E/F/G/A/B/ c2 C2 eedd']  
X:1
L:1/8
M:2/4
K:C
 cGGE/F/ | GG G2 | A/G/F/E/F/G/A/B/ | c2 C2 | eedd | cc B2 | cGBc | d2 G2 | GGAB/c/ | dd G2 | 
 cccc | B2 G2 | cGcG | ec G2 | cGEE/F/ | G2 C z |]  