Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/8
M:2/2
K:A
['ECA,C E2 EF', 'AacA eAA=g'  
X:1
L:1/8
M:2/2
K:A
 F | ECA,C E2 EF | ABcA BB,B,F | ECA,C E2 EF | EFAB cAA :| e | AacA eAA=g | fde=c B=GGB | 
 AacA eAAa | f/g/a ef cAAe | AacA eAA=g | fdec dBBd | cAGA FAEd | c/d/e f/g/a cAA ||  