Construct a melodic piece using the alphabet-based musical sequence and the given motif.
X:1
L:1/4
M:3/4
K:Eb
['E G B', 'G A B']  
X:1
L:1/4
M:3/4
K:Eb
 G/4F/4 | E G B | A G F | E G B | E2 d/e/ | c A F | G A B | E2 G/F/ | E G B | A G F | E G B | 
 e2 d/e/ | c A F | G A B | E2 || d/e/ | f3/2 d/ B | B3/2 z/ c/d/ | e B G | E3/2 z/ F/G/ | A G A | 
 B G E | F2 G/F/ | E G B | A G F | E G B | e2 d/e/ | c A F | G A B | E2 ||  