Compose a musical piece based on the given motif and alphabet representation.
X:1
L:1/8
Q:1/4=100
M:3/4
K:G
['dB AG', 'e2 de gd e2 dB', 'A2 ABAG', 'A2 ABAG']  
X:1
L:1/8
Q:1/4=100
M:3/4
K:G
 GA | B2 dB AG | B{c}B dB AG | A2{c} AB AG | A2{c} AB AG | B{c}B dB AG | B2 dB A/B/A | 
 G2{A} GB A/B/A | G2{A} G2 :: Bd |{ef} e2 de gd | e2 dB AG | A2{c} AB AG | A2{c} A2 Bd | e2 de gd | 
{ef} e2 dB A/B/A | G2{A} GB A/B/A | G2{A} G2 ::"^Roche version" B2 dBAG | B2 dBAG | A2 ABAG | 
 A2 ABAG | B2 dBAG | B2 dBAB | G2 GBAF | G2 GBAG :: e2 dBgd | e2 dBAG | A2 ABAG | A2 ABAG | 
 e2 dBgd | e2 dBAB | G2 GBAF | G2 GBAG :|  