Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:3/4
K:D
['dc BA Bc', 'DE F2 B2 A3 D ED FB'  
X:1
L:1/8
M:3/4
K:D
 A, DE |"D" F4 F2 |"^(Dmaj7)" F4 FE |"^(D6)" F2 A3 B |"D" AF D2 D<E | F2 d2"G" B2 |"D" A3 D ED | 
"A7" FB AF ED |"D" D3 :: A Bc |"D" d4- dd |"^(Dm7)" dc BA Bc |"^(D6)" d3 B AF |"D" D4 d2 | 
"Em" e4 ef | e2 d2 e2 |"Bm" f3 a fe | dc BA Bc |"G" d4 de | d2 c2 B2 |"D" A3 B AG | FE DA, DE | 
 F2 d2"G" B2 |"D" A3 D ED |"A7" FB AF ED |1"D" D3 :|2"D" d3 |]  