Design a melodically engaging tune in accordance with the suggested chord progression.
'D', 'G', 'D', 'G', 'A', 'D', 'G', 'D', 'G', 'A', 'D', 'A', 'G', 'D', 'G', 'D', 'G', 'D', 'G', 'A', 'D'  
X:1
L:1/8
Q:1/8=220
M:6/8
K:D
"D" d2 A A2 F |"G" GAB"D" A2 z |"G" Bcd efg |"A" fed cBA |"D" d2 A A2 F |"G" GAB"D" A2 z | 
"G" Bcd efg |"A" Adc"D" d3 ::"A" e2 A A3 | efg f3 | efg fed |"G" cdB"D" A2 A |"G" BGB"D" A2 A | 
"G" BGB"D" A2 A |"G" Bcd efg |"A" Adc"D" d3 :|  