Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
M:4/4
K:G
['z AAB c2 d2 e2 d2 dB']  
X:1
L:1/8
M:4/4
K:G
 DEF | G2 B2 BBAB | cA A2 z DEF | G2 B2 BBAG | A4 z AAB | c2 d2 e2 d2 | dB B2 z ded | dc c2 DcBA | 
 G4 z AAB | c2 d2 e2 d2 | dB B2 z ded | dc c2 DcBA | G4 z |]  