Develop a musical arrangement using the specified sequence in alphabetic representation and the provided motif.
X:1
L:1/8
Q:3/8=120
M:6/8
K:C
['cBc cGF EDC DBd Ece Ffd{c} BAG', 'BgG GA_B AGF ABc cAa ABc BAG']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:C
|:{d}"^tr" c>Bc{d}"^tr" cBc | cGF EDC | DBd Ece | Ffd{c} BAG |{d} c>Bc{c} c>Bc | ca^f gfg | 
 edc BdG | Ac^F G3 :: GA_B BgG | GA_B AGF | ABc cAa | ABc BAG | aed gec | Afd BAG | AGF EGC | 
 DAB, C3 :|  