Develop a musical composition that aligns with the given structural outline and thematic content.
X:1
L:1/8
Q:1/2=104
M:4/4
K:G
['DGBG d<GB<G DGBG E<A TA2 DGBG dGB<g', 'dgbg agbg ea Ta2'  
X:1
L:1/8
Q:1/2=104
M:4/4
K:G
 DGBG d<GB<G | DGBG E<A TA2 | DGBG dGB<g |{e} d>cBA G<G G2 :| d<g Tg2 dgbg | agbg ea Ta2 | 
 d<g Tg2 dgbg | agbg ea Ta2 | d<g g2 dgbg | agbg ea Ta2 | g<be<g d<gB<g |{e} d>cBA G<G G2 |]  