Create a musical piece with the provided alphabetic notation system and theme.
X:1
L:1/8
M:4/4
K:C
['Bcde dcBc', 'BcBA G2']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:G] .abc (dc)"^segno" | Bcde dcBc | dBgB bBgB | Bcde dcBc | Aaag fedc | Bcde dcBc | 
 dBgB bBgB | bagf gfed | egfa gedc || BcBA G2 (BG) | DGBG DG B2 | BcBA G2 (BG) | FGAB cedc | 
 BcBA G2 BG | DGBG DGBc | dBcA BGAF | DEFG ABcA"^segno" |]  