Construct a musical work that combines the specified alphabet-based pattern with the given melodic theme.
X:1
L:1/4
Q:3/4=50
M:3/4
K:A
['z z', "(c'2 b)", '[Bg] z/ [Bb]/ [Bb]']  
X:1
L:1/4
Q:3/4=50
M:3/4
K:A
!f! A, | ._B, .=B, .=C | .^C .D .^D | E2 z | z z eS |:!p! (c'2 b) | (a2 e) | (g2 f) | (d'2 c') | 
 (c'2 b) | (f2 g) | (b2 a) | e z e | (c'2 b) | (a2 e) | (g2 f) | (d'2 c') | (c'2 b) | (f2 g) | 
 a3- |1 a z e :|2 a z z |:!f! [Bg] z/ [Bb]/ [Bb] | [Bg] z/ [Bb]/ [Bb] | g (a/g/f/e/) | 
 (^^c/^d/) .B .B |!f! [Bg] z/ [Bb]/ [Bb] | [Bg] z/ [Bb]/ [Bb] | g (a/g/f/e/) | (^e/f/) B B | 
 [Bg] z/ [Bb]/ [Bb] | [Bg] z/ [Bb]/ [Bb] | [Bg] z z3/4 [eb]/4 | [eb]2 z3/4 [e=d']/4 | [ed']2 z | 
 z z e"_D.C."S |]  