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:3/8=100
M:6/8
K:G
['key sig in GBB Acc GAB cde', 'G3 def g2 g g(a/g/f/e/) d3 Bcd']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
"^No key sig in ms" GBB Acc | GAB cde | dBG FGA | BGG G3 :: def g2 g | g(a/g/f/e/) d3 | Bcd efg | 
 fed g3 | ccc BBB | AFA cde | dBG FGA | BGG G3 :|  