Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
M:6/8
K:Dmix
['B (BA).B def', 'fdd d2']  
X:1
L:1/8
M:6/8
K:Dmix
 vB2 B (BA).B | def gdB | A2 A (AG).A | Bd"^4"e dBA | B2 B (BA).B | def gfg | (ea).a a2 g |1 
 fdd d2 c :|2 gdd def |]: vgag gfe | d2 d (dc).B | A2 A (AG)A | Bdd def | g2 g (gf).e | d2 d d^cd | 
 (ea).a a2 g ||1 fdd d2 c :|2 fdd d2 c |]  