Design a melodically engaging tune in accordance with the suggested chord progression.
'D', 'G', 'A', 'D', 'G', 'D/A', 'A', 'D', 'D', 'G', 'A', 'D', 'G', 'D/A', 'A', 'D'  
X:1
L:1/8
Q:1/4=100
M:4/4
K:Db
 DF |"D" AA AB A2 FA | dd de d2 AA |"G" BB AA"^(Em)" GG FF |"A" E4 z2 DF |"D" AA AB A2 FA | 
 dd de d2 AA |"G" Bc dB"D/A" AF"A" FE |"D" D4 z2 || AA |"D" d4- dd fe | d6 AA | 
"G" BB AA"^(Em)" GG FF |"A" E4 z2 AA |"D" d4- dd fe | d6 AA |"G" Bc dB"D/A" AF"A" FE |"D" D6 |]  