Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/8
M:3/8
K:D
['d/e/ f f/g/ f/e/ d d/e/ d/c/', 'd2 f g/a/ g/f/ e/d/ ceg fdA', 'FAd dcB cea g2 f gfg Bed']  
X:1
L:1/8
M:3/8
K:D
 d/e/ | f f/g/ f/e/ | d d/e/ d/c/ | Bcd | A2 f | (gf)e | bac | (ed)d | d2 :: f | g/a/ g/f/ e/d/ | 
 ceg | fdA | FGA | Bcd | (e/f/)g"^*"e | d2"^*" A | ff/g/f/e/ | dd/e/d/c/ | Bcd | A2 f | (gf)e | 
 (ba)c | edd | d2 :: A/G/ | FAd | dcB | cea | g2 f | gfg | Bed | c/d/ e/d/ c/B/ | A/B/ A/G/ F/E/ | 
 FAd | dcB | cea | g2 f | gfg | Bed | d/c/ B/A/ B/c/ | d2 :|  