Construct a musical composition utilizing the provided motif and conforming to the specified structure.
X:1
L:1/8
M:4/4
K:A
['ec c2'  
X:1
L:1/8
M:4/4
K:A
|:"A" E2 EF"Edim" A2 AB |"A" cBAB"C#m" ce e2 |"F#m" f2 fg"D" agaf |"A" ecBc"D" AF F2 | 
"A" E2 EF"F#m" A2 AB |"A" cBAB"C#m" ce e2 |"F#m" f2 fg"Bm" agaf |"E7" ecBc A2 A2 :: 
"A" A2 Ac"Edim" ec c2 |"A" ecac ec c2 |"Bm" B2 Bd fefg |"Bm" agaf ecBc |"A" A2 Ac ec c2 | 
"A" ecac"C#m" ec c2 |"F#m" f2 fg"Bm" agaf |"E7" ecBc A2 A2 :|  