Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
Q:1/4=100
M:3/4
K:Bb
['BdfdBd cfAcFA BdfdBd c2 F2 (f/g/)a geeccA', 'f6 cFAcfe ceBdGB ^F4 A2 geeccA fddcBA']  
X:1
L:1/8
Q:1/4=100
M:3/4
K:Bb
 BdfdBd | cfAcFA | BdfdBd | c2 F2 (f/g/)a | geeccA | fddBBG | eccAAF | fcgcac | (b/a/)g"^tr" g4 | 
 f6 :: cFAcfe |"^sic" ceBdGB |"^tr" ^F4 A2 | geeccA | fddcBA | (B/c/)d"^tr" A4 | G4 A2 | Bddffd | 
 AccffA | ABBeec | AFBFcF | BdfBAe | c6 | B6 :|  