Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:9/8
K:D
['(3Bcd f2 a fed', 'fga fed efa g2 e fed dcA']  
X:1
L:1/8
M:9/8
K:D
 D2 D FDF A (3Bcd | f2 a fed edc | B3 ABd A2 F | G2 F GFG ABd | A2 A G3 F (3Bcd | f2 a fed efa | 
 g2 e fed dcA | B3 AGF FDA :| f2 d edc d2 e | fga fed efa | g2 e fed dcA | B2 B AGF A (3Bcd | 
 ABA G3 F (3Bcd | fga fed efa | g2 e fed dcA | B3 AGF A (3Bcd :|  