Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:3/4
K:C
['f2 z2']  
X:1
L:1/8
M:3/4
K:C
 GG |"C" Ge cG EC |"G7" B,3 A GG | Gf BG FB, |"C" C3 E GG | Ge cG EC |"G7" B,3 A GG | Gf BG FD | 
"C" C2 z2 GG |:"G7" GB df ed |"C" ce ge' d'c' |"G7" bd' ac' gb |"C" ag ec G2 |"G7" GB df ed | 
"C" ce ge' d'c' |"G7" bd gb db |1"C" c'2 z2 GG :|2"C" c'2 z2 cc |:[K:F]"F" cB AF f2 | 
"Gm" fe dB g2 |"C7" gf ec c'2 |"F" d'c' af c2 | cB AF f2 |"Gm" fe dB g2 |"C7" gf ec c'e |1 
"F" f2 z2 cc :|2"F" f2 z2 c'c' |:"C7" c'b gb ag |"F" fa gf ed |"C7" c2 GB AG |"F" FA cf ac' | 
"Bb" ba gb ag |"F" fa gf ed |"C7" c2 EG ce |1"F" f2 z2 c'c' :|2"F" f2 z2 z2 |]  