Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/4
Q:1/4=240
M:4/4
K:G
['A B', 'd e']  
X:1
L:1/4
Q:1/4=240
M:4/4
K:G
|: G G G/E/D/E/ | G3 A | B B/c/ B/A/G/F/ | E3 d | e f/g/- g/f/ e | d e/d/- d/B/ G |1 A B c ^c | 
 d D E F :|2 A B/d/- d/B/ A | G d e f |: g g/g/- g/e/ d | e3 d | e e/f/ e d | B3 d | 
 e f/g/- g/f/ e | d e/d/- d/B/ G |1 A B c ^c | d ^d e f :|2 A B/d/- d/B/ A | G4 ||  