Construct a piece of music by converting the stated musical sequence into an alphabetical format and integrating the supplied motif.
X:1
L:1/8
Q:1/8=80
M:4/4
K:none
['a e2{gcd} c{GdG}cB{G}A |{Gdc} d{g}e{gfg}f{gef} e3']  
X:1
L:1/8
Q:1/8=80
M:4/4
K:none
|: | a e2{gcd} c{GdG}cB{G}A |{Gdc} d{g}e{gfg}f{gef} e3 |{Gdc} d{gcd}ce{A}e{gcd}ce{A}e | 
{gef} e{Gdc}d{gcd}c{gBd} B2 ||{ag} a e2{gcd} c{GdG}cB{G}A |{Gdc} d{g}e{gfg}f{gef} e3 | 
{Gdc} d{gcd}ce{A}e |{gef} e{Gdc}d{gcd}c{gBd} B3{G} A2 :|  