Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/16
M:2/4
K:C
["ef g2c'2 c2>e2 e2d^c d2de f2a2 B2>d2", 'c2e2 c2ef']  
X:1
L:1/16
M:2/4
K:C
 ef |:"C" g2c'2 c2>e2 |"Dm" e2d^c d2de |"G7" f2a2 B2>d2 |"C" d2cB c2ef | ag^fg c'2e2 | 
"Dm" gfef a2d2 |"G7" fede g2B2 |1"C" c2e2 c2ef :|2"C" c2e2 c2ef |:[K:G]"G" .d2 !>!b4 ag | 
"C" .a2 !>!g4 fe |"D7" .e2 !>!d4 Bc | d2c'2"G" b2Bc | .d2 !>!b4 ag |"C" .a2 !>!g4 fe | 
"D7" .e2 !>!d4 fa |1"G" g2g2 g2Bc :|2"G" .g2g2 g2e=f |:[K:C]"C" g4 eceg |"F" c'4 a2fe | 
"G7" d2^c2 d2ed |"C" c2e2 g2ef | g4 eceg |"F" c'4 a2fe |"G7" d2^c2 d2ed |1"C" c2e2 c2ef :|2 
"C" c2e2 c2 z2 |]  