Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:D
['', 'A,<A, B,>A, D2', 'd<d d>B e>d e<f A<A B>A', 'df/g/ a>f d>f e<d e>f a/g/f/e/ d>A']  
X:1
L:1/8
M:4/4
K:D
 A, |: B,<D D>B, C<E E>F | A,<A, B,>A, D2 C>A, | B,<D D>B, C<E E>F |1 A,<A, B,>A, D2 D>A, :|2 
 A,<A, B,>A, D2 D>E |: D<D F>D A<F E>B | D<D F>D A>D F<D | GB/G/ Fd/F/ E>D E<F |1 
 A,<A, B,>A, D2 D>E :|2 A,<A, B,>A, D2 D>f || d<d d>B e>d e<f | A<A B>A d2 d>f | d<d d>B e>d e<f | 
 A<A B>A d2 df/g/ | a>f d>f e<d e>f | a/g/f/e/ d>A d>e f<d | gb/g/ f/a/g/f/ e>d e<f | 
 A<A B>A d2 d>f | D<D F>D E>D E<F | D<D F>A A>B d>e | f>d e>B d>F E<F | A,<A, B,>A, D2 D ||  