Develop a musical piece by utilizing the alphabet-based notation of the selected musical form and the provided melodic idea.
X:1
L:1/4
Q:1/4=120
M:4/4
K:Bb
['F B3/2 A/ G A/B/ c3/2 B/', 'z F B3/2 A/ G A/B/ c3/2', 'd e', 'B A B3/2 A/ G (A/B/) c3/2']  
X:1
L:1/4
Q:1/4=120
M:4/4
K:Bb
"^Moderate" F | B3/2 A/ G A/B/ | c3/2 B/ A F | G2 A2 | B2 z || F | B3/2 A/ G A/B/ | c3/2 B/ A F | 
 G2 A2 | B3 |] | d | e d e f | g f e z/ d/ | e d c B | d c B || A | B3/2 A/ G (A/B/) | 
 c3/2 B/ A F | G2 A2 | B3 |]  