Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:4/4
K:G
['G2 BG DGBG AGEG DGBG dGBG']  
X:1
L:1/8
M:4/4
K:G
 (3DEF |"G" G2 BG DGBG | DGBG"Am" AGEG |"G" DGBG dGBG |"C" cBAG"D7" FGAF |"G" G2 BG DGBG | 
 DGBG"Am" AGEG |"G" DGBG dGBG |1"D7" cAFA"G" G2"D7" (3DEF :|2"D7" cAFA"G" G2"D7" (3def |: 
"G" g2 dg Bgdg |"C" egcg egcg |"D" fgdg fg"^(B7)"df |"Em" gabg"D7" agdf |"G" g2 dg Bgdg | 
"C" egcg egcg |"D" fgdg fg"D7" (3def |1"G" g2"D" f2"G" g2"D7" (3def :|2"G" g4"G" g2"D7" (3B_BA ||  