Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
Q:1/4=120
M:12/8
K:G
['d3 B3', '(EBc) (FBA)']  
X:1
L:1/8
Q:1/4=120
M:12/8
K:G
"^Allegro." d | (ga^f) (gaf) g3 (gab) | (fgd) (efc) (dfb) (dcB) | (cba) (cBA) (Bag) (d^fg) | 
 (e^fg) D(gf) (GBd) (GBd) | (^FAd) (FAd) (GBe) (GBe) | (Acf) (Acf) (dcB) (d^fg) | 
 (=Bdg) (Bdg) (edc) (d^Fd) | (GBd) (Edc) d3 B3 | d3 B3 A3 G2 :: f | (dcB) (dcB) (FAB) (DAc) | 
 (EBc) (FBA) (GAB) (DBc) | (EBc) (FBA) (GAB) (fBf) | (gBg) (aBa) (bfe) (dcB) | 
 (GAB) (FBA) B3 (bag) | (fed) (cdB) (FAB) (DBc) | (EBc) (FBA) B,3 z2 d | (ga^f) (gaf) g3 (gab) | 
 (fgd) (efc) (dfb) (dcB) | (cba) (cBA) (Bag) (d^fg) | (c^fg) D(gf) (GBe) GFE | 
 FAd (FED) E(dc) (^Fcd) | (GAB) (DG^F) (GBe) (GFE) | (FAd) (FED) E(dc) (^Fcd) | 
 (GAB) (DG^F) G3 G2 :|  