Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
M:4/4
K:C
['fd d2', '(3fgf df abaf', 'f2 df'  
X:1
L:1/8
M:4/4
K:C
[M:4/4][K:D] e e f C .g ave bee b e.ag | fd d2 AdFd | fd d2 Addc | BG G2 DGB,G | (3Bcd ce dfag | 
 fd d2 Ad d2 | fd d2 Ad (3edc | BG G2 DGB,G | (3Bcd ce df || ag | (3fgf df abaf | (3gag eg bc'ba | 
 (3fgf df abaf | (3efe (3dcB A2 ag | (3fgf df abaf | (3gag eg bc'ba | f2 df e2 ce | d2 (3fec df || 
"^simplified second part" ag | f2 df abaf | g2 eg b2 ba | f2 df abaf | e2 dB A2 ag | f2 df abaf | 
 g2 eg b2 ba | f2 df e2 ce | d2 ec d4 |]  