Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['D3 F A/A/A AB ABdA', 'd/d/d dA BAdA F/F/F FD']  
X:1
L:1/8
M:4/4
K:D
 D3 F A/A/A AB | ABdA F/F/F FD | EFEF B/B/B Bf | gfed B2 A/B/d | D3 F A/A/A AB | ABdA F2 ED | 
 GBGB FAFA | EFGA TB2 (A/B/d) :| dedf d/d/d dA | BAdA F/F/F FD | e>fef e/e/e ef | 
 gfed B/B/B (TBA) | d3 f d/d/d dA | BAdA F/F/F FD | G/G/G GB F/F/F FA | EFGA TB2 (A/B/d) :|  