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:6/8
K:Amix
['AAA cAc BGB', 'a2 e f2 e']  
X:1
L:1/8
M:6/8
K:Amix
 e | AAA cAc | BGB d2 f | ecA d2 c | B/B/AG A<Ae | AAA cAc | BGB Bcd | ecA d2 c | B/B/AG A<A :: g | 
 a2 e f2 e | a2 e f2 e | efg agf | edc B/B/ag | fed cAe | eac Bcd | ecA d2 c | B/B/AG A<A :|  