Craft a musical work based on the specified structure and given theme.
X:1
L:1/16
Q:1/4=124
M:2/4
K:G
['G2G2 A2Bc B2A2 G4 gfed', 'd2fd{d} ^c2BA'  
X:1
L:1/16
Q:1/4=124
M:2/4
K:G
"^A" G2G2 A2Bc | B2A2 G4 | gfed efgd | c2B2 A4 | G2G2 A2Bc | B2A2 G4 | gfed efga | g2f2 g4 :| 
"^B" B2B2 A2A2 | d2ed ^c2A2 | f2gf e2d2 | ^cdec A4 | d2fd{d} ^c2BA | d2fd{d} ^c2BA | B^cdB A^cdG | 
 F2E2 D4 :|  