Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/8
M:2/4
K:Eb
['c B']  
X:1
L:1/8
M:2/4
K:Eb
 g c e f | g g f e | g g c e | c B G2 | B G B c | e3 c | g2 f e | c B G c | B4 | B c e2 | g f2 e | 
 G2 B2 | e2 c B | B F G F | E4 | G G2 B | c4 | c e c B | B F G F | E3 B | G F E C | E4 |]  