Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
Q:1/8=260
M:2/4
K:G
['G/A/G/F/ GA Bd', 'g2 ga ag/a/ gf ed B2 B/c/B/A/']  
X:1
L:1/8
Q:1/8=260
M:2/4
K:G
 G/A/G/F/ GA | Bd e/f/g | B2 B/c/B/A/ | GE F/E/D | G/A/G/F/ GA | Bd ed | e/f/g af | g2 g2 :| 
 ga ag/a/ | gf ed | B2 B/c/B/A/ | BE ED | G>A GA | B/c/d/f/ ed | e/f/g/e/ af/a/ | g2 g2 :|  