Craft a musical piece that incorporates the given motif and follows the outlined structure.
X:1
L:1/8
Q:1/8=50
M:2/4
K:G
['B/A/ GG DD', 'cc/B/ B/A/G/A/ FB/A/', 'BGBG BGBG'  
X:1
L:1/8
Q:1/8=50
M:2/4
K:G
"^secundo" B/A/ | GG DD | B,B,B, F/G/ | AA/B/ GG/A/ | FFF B/A/ | GG DD | B,DB,D | C2 DC | B,B,B, :: 
 B/A/Ge/d/ cc/B/ | B/A/G/A/ FB/A/ | Ge/d/ c/B/A/G/ | FFF B/A/ | Ge/d/ cc/B/ | B/A/G/A/ FB/A/ | 
 G/B/A/G/ F/A/G/F/ | GB,B, :: G/A/ | BGBG | BGBG | GG c/B/A/G/ | AF/F/ GA | BGBG | BGBG | 
 dB/c/ d/c/B/A/ | GDB, :|  