Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
['(3ded (3cBA B2 (g>g) g2 f2', 'd2 D2 d2 (c>c) c2 D2 c2']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:G
 G2 d>d (3ded (3cBA | B2 (g>g) g2 f2 | e2 d2 c2 B2 | A2 (A>A) A>cB>A | G2 (d>d) (3ded (3cBA | 
 B2 (g>g) g2 f2 | (fe)(ge) (ed)(dc) | d2 (d>d) d2 :: D2 | d2 (c>c) c2 D2 | c2 (B>B) B2 cd | 
 E2 (FG) A>B c/B/A/G/ | F2 (D>D) DDEF | GGBG EEcA | FFdB GGec | B/g/f/g/ f/e/d/c/ B2 A2 | 
 G2 (G>G) G2 :|  