Craft a musical composition following the provided chord structure.
'G', 'G', 'Em', 'Am', 'D7', 'G', 'C', 'G', 'D7', 'G', 'Em', 'D', 'C', 'G', 'Em', 'Am', 'D7', 'G', 'C', 'G', 'D7', 'G'  
X:1
L:1/8
M:2/2
K:G
|:"G" GEDE G2 GA | B2 BA Bc d2 |"G" GEDE"Em" G2 GB |"Am" A2 AB"D7" AGED |"G" GEDE G2 GA | 
 B2 BA Bc d2 |"C" edef"G" gedc |"D7" BGAF"G" G4 ::"Em" g2 ge"D" f2 fd |"C" edef"G" ed B2 | 
 gedB"Em" G2 GB |"Am" A2 AB"D7" AGED |"G" GEDE G2 GA | B2 BA Bc d2 |"C" edef"G" gedc | 
"D7" BGAF"G" G4 :|  