Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/8
M:4/4
K:D
['f/g/ abag fddf gBed cAAf abag fdfa', 'B/B/B cA'  
X:1
L:1/8
M:4/4
K:D
|: f/g/ | abag fddf | gBed cAAf | abag fdfa | B/B/B cA d2 d :| g | fdge fddf | gfed cAAg | 
 fdge fdfa | B/B/B cA d2 de | fdge fddf | gfed cAAe | fdge fdfa |1 B/B/B cA defg ||2 
 B/B/B cA d3 d ||  