Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:D
['', 'd2 e2', 'D2 F2 A2 FA dBAd BBAA ABcd']  
X:1
L:1/8
M:4/4
K:D
 B |: d2 e2 f2 ff | fedf BAFA | d2 e2 ffdf | agfa g3 c | e2 f2 g2 ga | gf e2 c3 c | cAce aaga | 
 baga fafB | d2 e2 f2 ff | fedf BAFA | d2 e2 ffdf | agfa g3 c | e2 f2 g2 ga | gf e2 c3 c | 
 cAce abaf | gece d3 B :: D2 F2 A2 FA | dBAd BBAA | ABcd e2 ce | fedf e3 F | D2 F2 A2 FA | 
 dBAd BBAA | ABcd edeg | fgec d3 F :|  