Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:2/4
K:D
['gg cc dd A2 bb', 'gg cc dd A2 bb']  
X:1
L:1/8
M:2/4
K:D
 f/a/ |:"A7" gg cc |"D" dd A2 |"A7" bb c2 |"D" aa df/a/ |"A7" gg cc |"D" dd A2 |"A7" bb cc/e/ |1 
"D" dd df/a/ :|2"D" dd d z |:[K:A]"A" ce !>!a2 |"D" gf !>!f2 |"E7" ed d/c/d |"A" fe e/^d/e | 
 ce !>!a2 |"D" gf !>!f2 |"E7" ed e>b |[K:D]"A" ac' a"_>Teil A" z ::"A7" gg cc |"D" dd A2 | 
"A7" bb c2 |"D" aa df/a/ |"A7" gg cc |"D" dd A2 |"A7" bb cc/e/ |1"D" dd df/a/ :|2"D" dd d z |: 
[K:G]"G" dd/d/ ed | dg b2 | bb/a/ gg |"D7" aa/g/ f2 |"G" dd/d/ ed | dg b2 |"D7" ba a>f | 
"G" gg g z :|  