Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/8
Q:1/2=90
M:2/2
K:C
['(FG) ABAF A2 de edef d2 Bc', 'afdg fefg afdg g2 bg f2 af']  
X:1
L:1/8
Q:1/2=90
M:2/2
K:C
 C |[K:D]"^Wm Calvert's Book" (FG) | ABAF A2 de | edef d2 Bc | dedB ABAF | G2 E2 E2 (FG) | 
 ABAF A2 de | edef d2 Bc | dedc A>BA>G | F2 D2 D2 ::"^qu" g2 | fefg afdg | fefg afdg | 
 g2 bg f2 af | g2 e2 e2 (FG) | ABAF A2 de | fdef d2 Bc | dedc ABAG | F2 D2 D2 :|  