Develop a musical composition using both the specified melodic theme and the alphabetical pattern naming.
X:1
L:1/8
Q:1/4=56
M:2/4
K:C
['G/GG/ GF/E/', 'F/G/ A/AA/ (3ABA A/GG/ (3GAG G/FG/']  
X:1
L:1/8
Q:1/4=56
M:2/4
K:C
 G3 F | F<E- EE/F/ | G/GG/ GF/E/ | G/GG/ GF/E/ | G<F- F2 | A3 G | G<F- FF/G/ | A/AA/ AG/F/ | 
 A/AA/ AG/F/ | A<G- G2 | G3 F | F<E- EE/F/ | G/GG/ GF/E/ | G/GG/ (3_BBB | A3 || F/G/ | 
 A/AA/ (3ABA | A/GG/ (3GAG | G/FG/ A/G^F/ | G3 F/G/ | A/AA/ (3ABA | A/GG/ (3GAG | G/FG/ A/GF/ | 
 E4 |]  