Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['G/A/ B3 AGF DGG G2 A BAB', 'BAB cBc dgg fdc']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 G/A/ | B3 AGF | DGG G2 A | BAB cBc | dgg fdc | BGB AFA | DGG FGA | BdB cAF | AGG G2 :| A | 
 BAB cBc | dgg fdc | dgg gfg | agf g2 [Aa] |1 BAB cBc | dgg fdc | B2 d cAF | AGG G2 :|2 bgb afa | 
 gfd cAF | Bcd cAF | AGG G3 |]  