Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
M:4/4
K:C
['B2 AG', 'dcde f2 ef gefd']  
X:1
L:1/8
M:4/4
K:C
[M:4/4][K:D] Cae fae[Q:1/8=180] .B2 AG FDDE | (3FGA DF ADFA | B2 AG FDDF | E=C C2 EFGA | 
 B2 AG FDDE | (3FGA DF ADFA | B2 AG FDDF | E2 ED EFGA |] dcde f2 ef | gefd eBBA | Addc defd | 
 g2 fg efge | dcde f2 ef | gefd edBe | (3dcB cA Bcde | f2 af fedA |"^last time" D8 |]  