Produce a musical work that intertwines the supplied melodic theme and the indicated alphabetical pattern.
X:1
L:1/8
M:2/2
K:Bb
['f2 fd fd TB2 c2 cA cA', 'bB TB2', 'def gfe dBG BBB ccc efg dBG', 'Bdd GAB GAB ccc BBB FGA FGA']  
X:1
L:1/8
M:2/2
K:Bb
|: f2 fd fd TB2 | c2 cA cA TF2 | (G/A/)B (B/A/)G (A/B/)c (c/B/)A | GdcB (A/B/)c/A/ F2 | 
 f2 fd fd TB2 | c2 cA cA TF2 | (G/A/)B (B/A/)G Agfe | dc/B/ d/c/B/A/ B4 :: bB TB2 bB TB2 | 
 fd Td2 fd Td2 | ge Tc2 fd TB2 | edcB A/B/c/A/ Fg/a/ | bB TB2 bB TB2 | fd Td2 fd Td2 | gecA fdBG | 
 ce d/c/B/A/ B4 ::[M:6/8][K:G] d2 d def | gfe dBG | BBB ccc | efg dBG | d2 ddef | gfedBG | efgBdB | 
 G2 G G3 :: Bdd Bdd | GAB GAB | ccc BBB | FGA FGA | BddBdd | GABBcd | efgBdB | G2 G G3 :|  