Construct a musical arrangement using the specified alphabetical sequence and the given motif as a foundation.
X:1
L:1/8
Q:1/4=100
M:4/4
K:Ab
['BA G2 F2']  
X:1
L:1/8
Q:1/4=100
M:4/4
K:Ab
 E FE |"Ab" A3 C EE F>E |"Bbm" E2 D2 z D BA |"Eb7" G2 F2 EF DE |"Ab" C4 z E FE | A2 A2 GA BA | 
"Bb" G2 F2 z F"Bb7" BA |"Eb" G3 E"Bb" =D2"Bb7" F2 |"Eb" E4 z || C E>F |"Ab" E4 z C A>B | A6 GF | 
"Eb7" E2 B3 z G2 |"Ab" A4 z |]  