Create music compositions that adhere to the given structure and incorporate the provided musical concept.
X:1
L:1/8
M:4/4
K:Bb
['F3 F']  
X:1
L:1/8
M:4/4
K:Bb
 F3 F F3 F | F2 F2 D2 B,2 | F3 F F2 G2 | A2 F2 B3 B | B2 D2 E3 B | A2 G2 F2 B,2 | F2 F2 (CD) EF | 
 G2 F2 B,4 |]  