Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/8
M:2/2
K:D
['dB |{d} BAFA D2 FA BA', 'gf g3 a b2 ag fagf egfe']  
X:1
L:1/8
M:2/2
K:D
 dB |{d} BAFA D2 FA | BA (3Bcd e2 de | fagf egfe | dfed B2 dB |{d} BAFA D2 FA | BA Bd e2 de | 
 fagf ef{g}fe | d2 d2 d2 :: fg | afdf a2 gf | g3 a b2 ag | fagf egfe | dfed B2 dB |{d} BAFA D2 FA | 
 BA Bd e2 de | fagf ef{g}fe | d2 d2 d2 :|  