Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/4
M:3/4
K:Bb
['G F2']  
X:1
L:1/4
M:3/4
K:Bb
 G | F2 F | F G A | B2 A | G2 G | F2 F | B A G | F2 E | D2 D | E D E | F2 B | d2 B | c2 c | F G A | 
 B2 |]  