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:D
['D2 D', 'AAA A2']  
X:1
L:1/8
M:6/8
K:D
|: D2 D D2 E | F2 G A2 F | D2 D D2 F | E2 F GFE | DDD D2 D | F2 G A2 F | E2 B B2 A | E2 F GFE |] 
 AAA A2 G | F2 G A2 F | AAA A2 F | E2 F GFE | AAA A2 G | F2 G A2 F | E2 B B2 A | E2 F GFE :|  