Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
M:4/4
K:D
['dD (3DDD (3FED', 'bdad efga ge=ce e=cgc acgc fgaf bfaf']  
X:1
L:1/8
M:4/4
K:D
 (3ABc | dD (3DDD (3FED B,D | A,DFA BAFA | dDcD BDAD | (3FED FA BAFA | dD (3DDD (3FED B, D | 
 A,DFA BAFA | (3Bcd ec dBAG |1 FDEF D3 :|2 EDEF D2 ag || fgab afdg | fdad bdad | efga ge=ce | 
 e=cgc acgc | fgaf bfaf | gfeg fdBc | defd ecdB | AFEF D2 ag :|  