Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
Q:1/8=80
M:4/4
K:none
['A2{g} cA{g}BcdB |{g}', 'ce fa{g}acdafa ea{g}ac{G}caea fa{g}acdafa ce{A}e{g}B{G}Bd{g}cB ||{gAGAG}', 'cA{g}BcdB cdec{g}de{g}fg a{g}a{g}ae{g}faec |{g} dB{g}G{d}B{G}']  
X:1
L:1/8
Q:1/8=80
M:4/4
K:none
|: | A2{g} cA{g}BcdB |{g} cd{g}ec{g}de{g}fg | a{g}a{g}ae{g}faec |{g} dc{g}c{G}c{g}Bd{g}cB || 
{gAGAG} A2{g} cA{g}BcdB |{g} ceA{d}c{g}eA{d}ce | fa{g}aeae{g}ce |{g} dB{g}G{d}B{G} A2 ::{g} ce | 
{g} fa{g}acdafa | ea{g}ac{G}caea | fa{g}acdafa | ce{A}e{g}B{G}Bd{g}cB ||{gAGAG} A2{g} cA{g}BcdB | 
{g} cdec{g}de{g}fg | a{g}a{g}ae{g}faec |{g} dB{g}G{d}B{G} A2 :|  