Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/4
M:3/4
K:Eb
['B/4c/4d/ e f g']  
X:1
L:1/4
M:3/4
K:Eb
 B/4c/4d/ | e f g | B3/2 G/ F/G/ | A G F | E2 B/4c/4d/ | e f g | B c d | (e3 | e2) B/4c/4d/ | 
 e f g | B3/2 G/ F/G/ | A G F | E2 G/A/ | B G E | E G B | e3 | e2 g/f/ | e B/G/ F | G G F | E3 | 
 E2 ||  