Design a music piece by incorporating the given alphabetic pattern and motif.
X:1
L:1/4
Q:1/2=120
M:2/4
K:Bb
['D B F E D', 'd c']  
X:1
L:1/4
Q:1/2=120
M:2/4
K:Bb
 b | f d c B | c3 d/e/ | d c/B/ A B | c2 F3/2 E/ | D B F E | D B F E | D e d c | B2 B, :| d | 
 c A G F | A2 G d | c A G F | G2 C d | c A G F | f d c B | A f A G | F2 Tb |]  