Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
M:4/4
K:G
['', 'BAFG AD (3DDD', 'e2 fdfg abaf efge fd d2 fdfg']  
X:1
L:1/8
M:4/4
K:G
 c |: BAFG AD (3DDD | BAFG A2 Ac | BAFG AD (3DDD |1 ABde"^tr" f2 ed :|2 ABde fd d2 || fdfg abag | 
 fdfa be e2 | fdfg abaf | efge fd d2 | fdfg abag | fdfa be e2 | agfe d^cBc | ABde fd d2 ||  