Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
['BABc d2 gf egec', 'B dBGB AcAF']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
"^Fast" BABc d2 gf | egec ddBc | BABc d2 gf | egec dBdd | BABc ddgf | egec ddBd | BABc ddgf | 
 egec Bddd || [G,G]3 B dBGB | AcAF GFED | [G,G] [G,G]2 B dBGB | AcAF G2 D2 | [G,G]3 B dBGB | 
 AcAF GFED | [G,G]3 B dBGB | AcAF GD G2 ||  