Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/16
M:2/4
K:Bb
['.vB2vBc BFDF BcdB edcB Bdfg', 'B2B2B2 (uBd) .vf2vfg fdfb .vg2vga gfga bagf']  
X:1
L:1/16
M:2/4
K:Bb
 uF2 | .vB2vBc BFDF | BcdB edcB | Bdfg fdBd | edcB AcAF | .vB2vBc BFDF | BcdB edcB | Bdfg fdAc | 
 B2B2B2 :: (uBd) | .vf2vfg fdfb | .vg2vga gfga | bagf edcB | ABcA F2(de) | .f2fg fdfb | 
 .g2ga gfga | b2(fd) ecAc | B2B2B2 :|  