Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:Bdor
['B2 fB', 'fgab fgab']  
X:1
L:1/8
M:4/4
K:Bdor
|: B2 fB AEcA | FABc BAFA | B2 fB AAcA | cFBF AFEA | B2 fB AecA | FABc BAce | fAeA cFBF |1 
 AFEA FBBA :|2 AFEA FB B2 |: bfab f B3 | B^dfB a2 ga | bfab fB B2 | cFBF AFEa | bfab fBBA | 
 B^dfB a2 ga |1 bfae fceB | cFBF A2 ce :|2 fgab fgab | fgab efga ||  