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:4/4
K:D
['df ec', 'dB ^GB']  
X:1
L:1/8
M:4/4
K:D
 dA eA fA g^g | aa bc' d'd cB | A2 BA cA df | ef ge ag ec | ^AB gB =AF fA | GE eG FD dF | 
 G2 (3BAG Ae cA |1 df ec dA FA :|2 df ec d2 AG |: FA dA FA dF | GB dB GB dB | ^GB eB GB eG | 
 Ac ec aA gA | GA dA GA dF | GB dB G2 dB | ^GB e=g ag ec |1 df ec d2 AG :|2 df ec d4 ||  