Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/4
Q:1/4=160
M:3/4
K:D
['a2 a', 'd z']  
X:1
L:1/4
Q:1/4=160
M:3/4
K:D
|: D3/2 (F/A/d/) | f2 f | F3/2 (A/d/f/) | a2 a | b3/2 (a/g/f/) | g2 c | e3/2 (d/c/B/) | A2 A | 
 D3/2 (F/A/d/) | f2 f | F3/2 (A/d/f/) | a2 a | b3/2 (a/g/f/) | g2 c | d z d |1 d z z :|2 d z f |]: 
 a2 a | (b2 c') | d'2 f | d b a | g3/2 f/ g | A a g | f3/2 (e/f/e/) | d2 f | a2 a | (b2 b) | 
 d'2 f | d b a | g3/2 f/ g | A a c | d z d |1 d z f :|2 d z z |]  