Design a musical creation that involves the supplied motif and respects the established alphabetical structure.
X:1
L:1/4
M:4/4
K:F
['A G', 'G A']  
X:1
L:1/4
M:4/4
K:F
 c/A/ | F F (F/A/) c | (d c) A G | G F D E | F2 z c/A/ | F F (F/A/) c | (d c) A G | G F D E | 
 F2 z c | d c d e | (f d) c A | G F G A | G2 z c | F F F/A/ c | (d c) A G | G F D E | F2 z |] 
[M:4/4][K:Bb] D | G G A A | B A/ G A | B G A A | G2 z D | G G A A | B3/2 c/ d d | c B B A | 
 B2 z B | d d c c | B2 A A | G G A G | D3 D | G G A A | (B3/2 c/) d d | c B B A | G3 |]  