Develop a musical piece by utilizing the alphabet-based notation of the selected musical form and the provided melodic idea.
X:1
L:1/4
M:3/4
K:Bb
['D G']  
X:1
L:1/4
M:3/4
K:Bb
 D G A | B3/2 A/ G | G D ^F | (=E2 D) | D G A | B3/2 A/ G | G D D | G2 B/c/ | d/d/ e d | 
 c A (A/c/) | B A G | A2 D/D/ | D G A | B3/2 A/ G | D G ^F | G3 |]  