Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
Q:1/4=120
M:6/8
K:Bb
['B2 B BcA B2 f fge d2', 'BcA B2 f fge d2 e fdB', 'fga b2 f gfe d2 e fdB', 'B,DF BAB', 'edc f2 F FGA B3 B2']  
X:1
L:1/8
Q:1/4=120
M:6/8
K:Bb
"^Spirited" B2 B BcA | B2 f fge | d2 e fdB |{c} BAB cAF || B2 B BcA | B2 f fge | d2 e fdB | 
 FGA B2 z |] f2 f fga | b2 f gfe | d2 e fdB |{c} BAB cAF || | f2 f fga | b2 b bag | f2 g fdB | 
 FGA B2 z | B,DF BAB | cAF FGA | Bcd dcB | cAF EDC || B,DF BAB | cde edc | f2 F FGA | B3 B2 z |]  