Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:2/2
K:G
['gd<B-TB>A G>AGD E>GD>G E>GDg d<B-TB>A G>FGA', 'd3 =f e<cTc>A TB>cdB c<AA>F G>ABD E3/2D>G']  
X:1
L:1/8
M:2/2
K:G
 gd<B-TB>A G>AGD | E>GD>G E>GDg | d<B-TB>A G>FGA | B<dd>^c d3 :: =f | e<cTc>A TB>cdB | 
 c<AA>F G>ABD | E3/2D>G E>GD>c |{c} BA/G/{B} AG/F/ G2- G2 :|  