Construct a musical piece conforming to the alphabetically indicated blueprint and the supplied motif.
X:1
L:1/8
M:4/4
K:Bb
['G c']  
X:1
L:1/8
M:4/4
K:Bb
 G | c G c d | e g c3/2 c/ | e d/c/ B G | A c d3/2 d/ | e c d B | c G G3/2 G/ | 
 B"^ral." A G3/2 z/ |]  