If someone wanted to check out Vocaloids and asked you what song should they look up? what song would u choose as a starter?

i cant end up with one answer .. so i cant say what vocaloid song you should listen to .. coz they are all damn good!! trust me .. once you listen to them .. you will love em ..

filled with stories and stuff.. XDD

this is one great vocaloid song : the series of evil
which includes daughter of evil servant of evil and blah blah blah .. XD