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 c d2 B/c/d', 'dB B2 g2 fg']  
X:1
L:1/8
M:4/4
K:D
|: d3 c d2 B/c/d | edBd egfe | d3 c d2 B/c/d | eBdB A3 B :: dB B2 g2 fg | edBd egfe | dB B2 g2 fg | 
 e/f/g dB A3 B :|  