Design a piece of music by fusing the provided alphabetic indicator and the predetermined tune.
X:1
L:1/8
Q:1/4=140
M:2/4
K:D
['gb b2 f a a2', 'fa fd']  
X:1
L:1/8
Q:1/4=140
M:2/4
K:D
 gb b2 | f a a2 | eg fd | ec BA | gb b2 | f a a2 | Bd ce | d2 D2 :: fa fd | gb ge | fa fd | ce e2 | 
 fa fd | gb ge | Ad ce | d2 D2 :|  