Create a piece of music utilizing the given motif and adhering to the specified structure.
X:1
L:1/8
Q:1/8=160
M:6/8
K:D
['efg gag', 'ecA ABA', 'efg gag', 'ecA ABA'  
X:1
L:1/8
Q:1/8=160
M:6/8
K:D
"^Per source (8 measures)" efg gag | efg gag | fdf ecA | d2 d f2 d :| ecA ABA | ecA ABA | fga ecA | 
 d2 d f2 d ::"^BB's alternative suggestion (standard 16 measures)" B | efg gag | efg gag | 
 fdf ecA | d2 d f2 d | efg gag | efg gag | fed ABc | d3 d2 :: B | ecA ABA | ecA ABA | fga ecA | 
 d2 d f2 d | ecA ABA | ecA ABA | fed ABc | d3 d2 :|  