Create musical compositions adhering to the given structure and incorporating the provided musical concept.
X:1
L:1/8
M:4/4
K:C
['B cCCB c2 (Bc) dDD^c d2 (=cd)', 'c f gEEg aFFa fFDf gEEB cCCc'  
X:1
L:1/8
M:4/4
K:C
 B | cCCB c2 (Bc) | dDD^c d2 (=cd) | eCCe fDDf | edcB c2 c :: f | gEEg aFFa | fFDf gEEB | 
 cCCc dDDf | edcB c2 c :|  