Design musical compositions that conform to the indicated framework and encompass the proposed musical concept.
X:1
L:1/8
M:4/4
K:F
['cB Ac f2 f2 gf', 'cB Afcf Afcf dB FD B,2 dc'  
X:1
L:1/8
M:4/4
K:F
 cB | Ac f2 f2 gf | eg b2 b2 gb | afge fdge |{f} e2 c2 c2 cB | Ac f2 f2 gf | e{f}g B2 B2 cB | 
 AFBG AFGE | F2 F2 F2 :: cB | Afcf Afcf | dB FD B,2 dc | =Bgdg Bgdg | ec GE C2 cB | Ac f2 f2 gf | 
 e{f}g B2 B2 cB | AFBG AFGE | F2 F2 F2 :|  