Craft a musical work adhering to the specified theme and structure.
X:1
L:1/16
M:2/4
K:Bb
['ef^fg a2g2', 'c=Bcd e2c2'  
X:1
L:1/16
M:2/4
K:Bb
"^A""Bb" F2Bd c2B2 |"F7" A2cg f2e2 | A2ce G2A2 |"Bb" B2db g2f2 | F2Bd c2B2 |"F7" A2cg f2e2 | 
 A2ce G2A2 |"Bb" B2B2 B2 z2 :|[K:F]"^B""F" !>!c4 agf2 |"C7" ef^fg c'2b2 | ef^fg a2g2 |"F" gffd c4 | 
 !>!c4 agf2 |"Gm" ef^fg a2g2 |"C7" ef^fg a2g2 |"F" f4 z2 f2 |"F7" f2 !>!g4 cd | 
 _e2A2 B2"_>Teil A" c2 |:[K:Eb]"^C""Eb" BBBB B2c2 | B4 g4 |"Bb7" gggg f2f2 |"Eb" gggg g2e2 | 
 BBBB B2c2 | B4 g4 |"Bb7" gggg g2f2 |"Eb" e2e2 e2"_Fine" z2 :|"^D""Cm" c=Bcd e2c2 | 
"G7" =Bcd2 Bcd2 |"Cm" c=Bcd e2c2 |"G7" g4 z2 gg | g2g2 g2g2 |"Bb7" g4"_>Teil C" z4 |]  