Produce a musical expression that follows the indicated alphabetical structure while integrating the provided thematic material.
X:1
L:1/8
M:2/2
K:G
['D2 G>A (3BBB B>e d>BG>A (3BBB B>^c', 'B2 z2 e>^de>=f e>fe>=d c>Bc>^c d>AB>=c d>^cd>e']  
X:1
L:1/8
M:2/2
K:G
 D2 G>A (3BBB B>e | d>BG>A (3BBB B>^c | d>B A2 A>^GA>B | A>GF>E (3DFA d2 | D2 G>A (3BBB B>e | 
 d>BG>A (3BBB B>^c | d>^cd>e f>ed>c | B2 d2 B2 :: z2 | e>^de>=f e>fe>=d | c>Bc>^c d>AB>=c | 
 d>^cd>e d>=cB>A | G>FG>A B>AG>F | E>^GA>B c>d e2 | D>FG>A B>^c d2 | ^c>df>e d>=cB>A | G2 B2 G2 :|  