Develop a musical piece by utilizing the alphabet-based notation of the selected musical form and the provided melodic idea.
X:1
L:1/8
M:12/8
K:D
['e2 d c2', 'e3 (4:3:4edef g3 B3']  
X:1
L:1/8
M:12/8
K:D
 f2 d f3 e2 d c2 A | B G2 d2 c B2 G G3 | e2 f g2 f e2 d c2 B | ABA ABc d3 d3 :: 
[K:Amix] e3 (4:3:4edef g3 B3 | A2 F A2 A B2 c d2 B | e3 (4:3:4edef g3 B3 | ABe d2 B A3 A3 :|  