Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/16
M:2/4
K:G
['(3DGB d2dB c2cA BGAF G2AB cdcB A2AG', 'B2BA G2GF GABG E2AB c2cB A2AG']  
X:1
L:1/16
M:2/4
K:G
 (3DGB | d2dB c2cA | BGAF G2AB | cdcB A2AG | ABAG F2 (3DGB | d2dB c2cA | BGAF G2AB | cdcB A2AG | 
 FDEF G2 :: D2 | B2BA G2GF | GABG E2AB | c2cB A2AG | ABAG F2D2 | B2BA G2GF | GABG E2AB | 
 c2cB A2AG | FDEF G2 :|  