Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
M:6/8
K:D
['FGA AFA BGB A3 Bcd efg', 'afa afa geg geg'  
X:1
L:1/8
M:6/8
K:D
 FGA AFA | BGB A3 | Bcd efg | fed cBA | FGA AFA | BGB A3 | Bcd efg | edc d3 :| afa afa | geg geg | 
 fag fed | ced cBA | afa afa | geg geg | fed cde | d3 d3 :|  