Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:4/4
K:G
['eABA eABA', "a2 abag edef g2 bg d'gbg a2"  
X:1
L:1/8
M:4/4
K:G
 eABA eABA | BGGA Bcdg | eABA eABA | Beed BA a2 | eABA eABA | BGGA Bc d2 | efed BAGA | 
 Beed BA a2 |: abag edef | g2 bg d'gbg | a2 ag edBA | Beed BA a2 :|  