Compose a piece of music following the specified structure and theme.
X:1
L:1/8
Q:1/2=100
M:2/2
K:D
['abag f(dd)f B/B/B', 'fdge f(dd)f B/B/B'  
X:1
L:1/8
Q:1/2=100
M:2/2
K:D
 f | abag f(dd)f | B/B/B (ed) c(AA)f | abag f(dd)f | B/B/B (cA) d3 :| g | fdge f(dd)f | 
 B/B/B (eB) c(AA)g | fdge f(dd)f | B/B/B (cA) d3 :|  