Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/4
M:2/2
K:F
['f g a g/a/ b/a/g/f/ e c', 'e c']  
X:1
L:1/4
M:2/2
K:F
 f g a g/a/ | b/a/g/f/ e c | d B G c | A F c2 | f g a g/a/ | b/a/g/f/ e c | d B G c | A F3 :: 
 G E G/E/G/E/ | c G A F | c B d/B/d/B/ | g d e c | a/g/ f g f/e/ | d/e/f/g/ e c | d/c/B/A/ G c | 
 A F3 :|  