Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
Q:1/4=90
M:4/4
K:F#
['z3/2 A/ G>F C4- C>A, C>F']  
X:1
L:1/8
Q:1/4=90
M:4/4
K:F#
 z3/2 A/ G>F |"F#" C4- C>A, C>F |"C#7" E4 z3/2 B/ A>G | D4- D>E D>C |"F#" A,4 z3/2 A/ G>F | 
 C4- C>A, C>F |"B" D4 z3/2 B/ A>^^G |"F#/C#" A4- A>F"C#7" E>G |"F#" F4 z2 || C2 | 
"C#7" G>^^F G4 A2 |"F#" F>D C4 C2 |"B" DD BA G2"B#dim" F2 |"C#" G4-"C#7" !fermata!G2 D2 | 
"F#" A>G F4 E2 |"B" D>F B4 D2 |"F#/C#" C3 F EF"C#7" A>G |"F#" F4 |]  