Create a piece of music utilizing the given motif and adhering to the specified structure.
X:1
L:1/8
M:4/4
K:G
['D2 FA', 'defg afbf afeg', 'Adde f2 de fdgf eA^ce g2 fg'  
X:1
L:1/8
M:4/4
K:G
"^D modal" D2 FA d2 dB | cAGE CEGE | DEFA dfed | cAGE EDCE |"^5" D2 FA d3 B | cA A2 Gc c2 | 
 ABcA dfed | cAGE ED D2 ||"^9" defg afdB | cdef gece | defg afbf | afeg fddf |"^13" afdf afdf | 
 gece g2 fe | defg afbf | afeg fdde ||"^17" f2 de fdgf | eA^ce gbag | f2 de fdge | fde^c Adde | 
"^21" f2 de fdgf | eA^ce g2 fg | (3agf ge dfed | cAGE ED D2 |]  