Hatsune Miku - Strobe Last
I've listened to this at least ten times now and every time I try to understand what the lyrics are saying I always get distracted by the melody. Lyrics shown in the video aren't helping me much either cause this song's got a semi-hypnotic effect on me. I'm certain that the one persistent tone in the song is responsible for that since it's synced to play once every second and my own internal clock, one that's been proven to be quite excellent, can't help but try to match it too. Fact is that if you're listening to this song it won't be for the lyrics, it'll be for the great rhythmic beat that's making you tap your finger, foot, etc.
Crybaby Boyfriend by Wotamin & TaMU
This duet features the story of a couple who break up with the girl comforting her crybaby of a boyfriend as he boyfriend tries not to cry like he usually does for their farewell. Wotamin's an amazing singer so her singing at all makes it a worth listening to but the TaMU did a pretty good job too. I find this to be the best of the three versions I've found with the nice balance the two of them have going during the song though I like lino's take on the girl's part of the song better than Wotamin's.
Original Version by Hatsune Miku & Kagamine Len
Another Cover by lino & MISAKI
P.s. It seems that Youtube embedding's gotten so popular that they shortened the embed code to a more simplistic one. Going to miss being able to choose the player color though.