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:2/4
K:Amix
['A>B cd ec', 'a2 ge fd']  
X:1
L:1/8
M:2/4
K:Amix
|: A>B cd | ec d2 | AB/c/ de | fg e2 | A>B cd | ec dA | BA GA | BA A2 :: a2 ge | fd e2 | A>B cd | 
 ed e/f/g | a2 ge | fd ed | BA GB | A2 A2 :|  