Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/4
Q:1/4=130
M:4/4
K:Eb
['G A']  
X:1
L:1/4
Q:1/4=130
M:4/4
K:Eb
 E2 | G A B B | A2 G A | G E F F E2 E2 | G A B B | A2 G A | G E F F | E2 B2 | c d e d | c2 B G | 
 c B A G | F2 G2 | E F G B | A2 G B | A G F F | E2 |]  