Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/2
K:A
['a2 ec', 'A2 (ag)(Tfe) (ag)(Tfe) (fe)(fa) b2 b2 (ag)(Tfe)', 'Aaec Aaec', 'afge fdec']  
X:1
L:1/8
M:2/2
K:A
|:"_Brisk" a2 ec a2 ec | TBABc f2 f2 | a2 ec a2 ec | dBec A2 A2 :: (ag)(Tfe) (ag)(Tfe) | 
 (fe)(fa) b2 b2 | (ag)(Tfe) (fa)(ec) | (dB)(ec) A2 A2 :: Aaec Aaec | Aaec B2 Tf2 | Aaec Aaec | 
 dBec A2 A2 :: afge fdec | dBcA B2 Tf2 | afge fdec | dBec A2 A2 :|  