Construct a musical work using the letter-based representation of the specified pattern and the given melodic subject.
X:1
L:1/4
M:3/4
K:G
['B A']  
X:1
L:1/4
M:3/4
K:G
 B2 A/B/ | A2 G/E/ | D2 D | E G A | G3- | G2 D | G A B | c B A | B A G | E G B | A3- | A2 B/c/ | 
 d B A | G2 A/B/ | c d e | d B A | A3- | A2 G/A/ | B2 A/B/ | A G E | D2 D | E G A | G3 |]  