Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/8
M:2/4
K:A
['B>c B2']  
X:1
L:1/8
M:2/4
K:A
 B>eBA | BeBB/A/ | B>c B2 | B>c B2 B>BBB | GF E2 | AF/A/BA/A/ | FC E2 | e>cBB | FAB z | c>BAA | 
 FCE z | AF/A/BA | AF/A/BA | FC E2 |]  