Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:6/8
K:A
['a2 a a2']  
X:1
L:1/8
M:6/8
K:A
 e |"A" c2 c"A/G#" cBA |"F#m" c2 c"E" cBA |"A" Ace aec |"E7" B3- Bed |"A" c2 c"A/G#" cBA | 
"F#m" edc"E" cBA |"A" Ace"F#m" a2 a |"E7" bag"A" a2 :| B |"A" A2 a g2 a | c2 B A2 E | 
"D" FGA"Bm" d2 c |"E" B3- B2 e |"A" e2 c efg |"F#m" a2 a a2 g |"D" f2 e"A" c2 e |"Bm" f3"E" e3 | 
"A" e2 c efg |"F#m" a2 a a2 g |"D" f2 e"A" c2 e |"Bm" f3"E" e>ef/g/ |"A" a2 c e2 f | c2 B A2 E | 
"Bm" FGA"E7" B2 G |"A" A3- A2 |]  