Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/8
M:4/4
K:G
['B2 B>B B2 AA A>AAA B2 G>G', 'dd B2']  
X:1
L:1/8
M:4/4
K:G
 B2 B>B B2 AA | A>AAA B2 G>G | GBde d2 B2 | d2 d>e d/d/d/e/ d2 || G>Bde dd B2 | G>Bdc dd B2 | 
 (3Bcd d2 (3Bcd d2 | cd e2 | dcdF | G6 z ||  