Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/16
M:4/4
K:F
['(ag) f2F2{B} A2GF E2(G2G2) ag f2F2A2c2 f4{g}', 'f2ed c2c2 Tf2>g2']  
X:1
L:1/16
M:4/4
K:F
 (ag) | f2F2{B} A2GF E2(G2G2) ag | f2F2A2c2 f4{g} f2ed | c2F2{B} A2GF E2(G2G2)A2 | 
 D2EF C2DE{E} F4 F2 :| c2 | Tf2>g2 a2f2{g} f2ed c2c2 | Tf2>g2 agab |{b} g4 c2>c2 | 
 (fe).f.g (fg)ab a2d2d2a2 | g2c2 (efg)e{e} Tf4 f2c2 | Tf2>g2{fg} a2>f2{g} f2ed c2c2 | 
 Tf2>g2 (ag)ab{a} Tg4 c2>c2 | Tfefg (fg)ab (ag)fe (de)fa | g2c2 (efg)e{e} Tf4 f2 ||  