Produce a musical work that intertwines the supplied melodic theme and the indicated alphabetical pattern.
X:1
L:1/8
M:2/4
K:G
['G D2 D']  
X:1
L:1/8
M:2/4
K:G
 D | GG/F/GA | _B=FzA | G D2 D | GG/F/GA | _B =F2 A | G D2 D | _BB/A/BA | _B/c/ d2 D | GG/F/GA/A/ | 
 _B/c/ d2 c/B/ | AG A2 | G2 z |]  