Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:3/4
K:G
['F3 c', 'cd ff dd cF Gd dd Bd']  
X:1
L:1/8
M:3/4
K:G
"^A""^gelassen, doch fliessend" G3 B/E/ EB | D2 gd BG | F3 c Ec | D3 d c!fermata!d | F3 c ED | 
 D2 fd cF | GB/B/ dg ed | B6 | G3 B/E/ EB | D2 gd B/G/e/d/ | F3 c Ec | D3 d c!fermata!d | F3 c ED | 
 D2 fd cF | G6 | g4 z2 ||[M:3/4]"^B""^lustig" Ad dd cd | ff dd cF | Gd dd Bd | g2 dd BG | F3 c ED | 
 Dd dc Fd | G2 g2 fe | d6 | Ad dd cd | ff dd cF | Gd dd Bd | g2 dd BG | F3 c ED | D2 ed cF | G6 | 
 g4 z2 |]  