Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/8
Q:1/8=260
M:4/4
K:D
['FB BA', 'ABce dB', 'bafb afec B2'  
X:1
L:1/8
Q:1/8=260
M:4/4
K:D
 BA |"Bm" FB BA B3 d |"A" cBAf ecBA |"Bm" FB BA BcdB | cBAc B2 :| Bc |:"Bm" d2 dc dfed | 
"A" (3cBA eA fA eA |"Bm" d2 dc defb | afed dB Bc ::"Bm" dB (3BAB bafb |"A" afec ABce | 
"Bm" dB (3BBB bafb | afec B2 Bc :|  