Construct a musical piece by amalgamating the designated alphabetical representation and the supplied musical theme.
X:1
L:1/4
M:3/4
K:Bb
['F B d f3/2 e/ d F/d/', 'D3/2 F/ B D F B d2', 'B G', 'f d', 'f d']  
X:1
L:1/4
M:3/4
K:Bb
"^Anruf" F B d | f3/2 e/ d | F/d/ c d | !fermata!B3 ||[M:4/4]"^A" B,3/2 D/ F2 | D3/2 F/ B | D F B | 
 d2 B3/2 F/ | d B f d | c2 F3/2 A/ | E F/e/ d c | B3/2 D/ F d | B4 | d3/2 F/ B2 | D3/2 F/ B | 
 D F B | d2 B3/2 F/ | d B f d | c2 F3/2 A/ | E F/e/ d c | (B4 | B2) z2 ||[M:4/4]"^B" B | 
 G3/2 E/ B, B | G E/B/ A G | F3/2 d/ B G | F D/F/ G B | A3/2 F/ E F | c F/e/ d c | B3/2 d/ B G | 
 F3 B | G3/2 E/ B, B | G E/B/ A G | F3/2 d/ B G | F D/F/ G B | A3/2 F/ E F | c F/e/ d c | (B4 | 
 B2) z ||[M:4/4]"^C" B,3/2 D/ F2 | D3/2 F/ B | D F B | d2 B3/2 F/ | d B f d | c2 F3/2 A/ | 
 E F/e/ d c | B4 ||[M:4/4]"^D" F3/2 F/ D F | f d B2 | F3/2 F/ E F | f d c2 | F3/2 F/ E F | f d c | 
 f d c | B3/2 d/ B G | F4 | F3/2 F/ D F | f d B2 | F3/2 F/ E F | f d c2 | F3/2 F/ E F | f d c | 
 f d c | B4 || z F B d | f3/2 e/ d c | B4 |]  