Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:2/4
K:F
['AA/A/Ac GG/G/Gc Ac/B/GG/A/ F2']  
X:1
L:1/8
M:2/4
K:F
 c/A/ | FFFd | cc/A/Bz/G/ | AB/c/d/c/B/A/ | G2 z G/A/ | BB/A/Gd | c>BAc | dcBA | G/F/E/F/Gc | 
 AA/A/Ac | GG/G/Gc | Ac/B/GG/A/ | F2 z c | AA/A/Ac | GG/G/Gc | Ac/B/GG/A/ | F2 z |]  