Construct a musical piece that contains the provided motif and abides by the prescribed alphabetical scheme.
X:1
L:1/16
M:2/4
K:A
['dcec cBdB AGBG A2E2 FAGB', 'edcd e2(fg) agbg a2eg agfe']  
X:1
L:1/16
M:2/4
K:A
 A2 | dcec cBdB | AGBG A2E2 | FAGB AcBd | [cA]a[ge][cA] B2d2 | dcec cBdB | AGBG A2E2 | FAGB Agfd | 
 cBAG A2 :| cd | edcd e2(fg) | agbg a2eg | agfe fedc | c2B2B2 (cd) | edcd e2(fg) | agbg a2eg | 
 agfe gfed | edef edc"^D.C."B |]  