Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:2/4
K:Emin
['BG BG/B/']  
X:1
L:1/8
M:2/4
K:Emin
|:{c} BG BG/B/ | ed B2 |{c} BG BG/B/ | cA D2 |{c} BG BG/B/ | ed B2 |{c} BG B>A | GF E :: 
{a} g>f eB | (3ded BG | EF GB |1 AG/F/ GE :|2 A/G/F/G/ E2 |]  