Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/8
M:6/8
K:A
['', 'c2 ^d2 d', 'c3- c2 G2', '[ge]3 [fd] z2']  
X:1
L:1/8
M:6/8
K:A
"A" |: e3 |"A" a6- | a2 a g2 g | e2 e f2 f | c3 c3- | c2 c"E7" B2 A |"A" A6 | z2 c"E7" B2 A | 
"A" A6- | A z2 :|"B" |] c3 |"C#m" c6- | c2 c"G#7" ^d2 d |"C#m" c2 c"G#7" ^d2 d |"C#m" c3 c3- | 
 c2 G"G#7" G2 G |"C#m" G6 | z2 G"G#7" G2 G |"C#m" G6- | G z2 e3 |"E" e6- | e2 e"B7" f2 f | 
"E" e2 e"B7" f2 f |"E" e3 e3- | e2 B"B7" B2 B |"E" B6 | z2 B"B7" B2 B |"E" B6- | B z2 z3 |]"C" |: 
"E7" [ge]3 [fd] z2 | [ge]3 [fd] z2 |"^(D)" [af]2 [ge] [fd]2 [af] |"E7" [ge]3 z3 | 
"E7" [ge]3 [fd] z2 | [ge]3 [fd] z2 |"^(D)" [af]2 [ge] [fd]2 [af] |"A" [ec]2 [cA] [cA]2 [cA] | 
"C#7" [cB]2 [cB] [cB]2 [cB] |"F#m" [cA]2 [cA] [cA]2 [cA] |"C#7" [cG]2 [cG] [cG]2 [cG] | 
"F#m" !fermata![afcAF]6 |"D" [bg]2 [af] [fd]2 [af] |"A" [ec]2 [cA] [cA]2 [dB] | 
"E7" [ec]2 [dB] [cA]2 [BG] |"A" [AA]3 z3 :| !fermata!z3 |]  