Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/4
M:4/4
K:A
['d c3/2']  
X:1
L:1/4
M:4/4
K:A
 E |"A" A3/2 B/"A7" A E |"D" F A"E7" B d |"A" c3/2 B/"A7" A E |"D" F2"E7" F E | 
"A" A3/2 B/"A7" A E |"D" F A"E7" B d |"A" c3/2 B/"D" A F |"E7" E2 E | d |"A" c3/2 d/ e c | 
"E7" d3/2 c/ B d |"A" c3/2 d/"A7" e E |"D" F2 F d |"A" c3/2 d/"F#m" e c |"Bm" f B"E7" B c/d/ | 
"A" c3/2 B/"D" A F |"E7" E2 E |]  