Compose music pieces conforming to the prescribed pattern and incorporating the provided musical concept.
X:1
L:1/4
M:4/4
K:Eb
['F G']  
X:1
L:1/4
M:4/4
K:Eb
 E2 E E | F G B2 | (G B) A G | F E2 z | E2 E E | F G B2 | (G B) A G | F E2 z | B (c/d/) e3/2 G/ | 
 A (B/c/) B z | B (c/d/) e3/2 G/ | A (B/d/) B z | E3 E | F G A2 | (G B) A G | F F2 z | 
 E3/2 E/ F G | (F E) |]  