Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:C
['D2 (3(FED)', 'gbag fd (3.d.d.d (fd)cA dg{a}gf g2 fg'  
X:1
L:1/8
M:4/4
K:C
 BEA |[M:4/4][K:G]SOSOO .!fermata!PMTuCO MD2"^Segno" | GBAF G2 (AF) | D2 (3(FED) ADFD | DGGF GABc | 
 dcde fdcA | GBAF GBAF | D2 (3(FED) ADGF | DG{A}GF GABc | dfeg fdcA || dg{a}gf gbag | 
 fd (3.d.d.d (fd)cA | dg{a}gf g2 fg | agbg ag{a}gf | dg{a}gf gbag | fgef defg | (3(agf) (ge) fdec | 
 dfeg fdc"^Dal Segno" A |]  