Compose a piece of music by integrating the assigned letter representation and provided tune.
X:1
L:1/8
Q:1/8=150
M:2/2
K:C
['c2 C2 ecAG F2', 'D CEGc egab a^gab']  
X:1
L:1/8
Q:1/8=150
M:2/2
K:C
 B | c2 C2 ecAG | F2 a2 a2 gf | egce dfBd | c2 ba g2 fd | c2 C2 ecAG | F2 f2 f2 gf | egce dfBd | 
 c2 e2 c3 :| D | CEGc egab | a^gab afdc | BDGB dgba | g^fga g3 D | CEGc egab | a^gab a2 =gf | 
 egce dfBd | c2 e2 c3 :|  