Paul McCartney, Ringo Starr, Yoko Ono and Olivia Harrison -- together in the same place and interviewed by ET's Mary Hart!

The last two living Beatles, Paul and Ringo, and Yoko and Olivia, the widows of John Lennon and George Harrison respectively, came together to celebrate two important events -- the release of a new digitally remastered complete Beatles catalogue of albums, as well as the debut of the Beatles edition of the popular video game, Rock Band.

Ringo said of their reunion, "Time heals, you know, all wounds, as they say. I don't even know if they say that, but it sounded good."

Paul said of the digitally remastered tracks, "If I'm listening to it, it sounds like I'm in the room on the session -- it's organic. I mean, if I'm listening to John sing 'Nowhere Man' or something, it's like I'm sitting next to him, it's like, this is great. This is really good."

The designers of their new video game, Rock Band, worked with Paul, Ringo, Yoko and Olivia to make sure it looked authentic, and Yoko said, "I think it's fantastic. It's so beautiful and so incredible. It's going to surprise a lot of people, but especially the young ones. The young generation really doesn't know about the Beatles and this is going to sound like new music to them, which is great."

The Beatles: Rock Band, as well as their digitally remastered catalogue, will be available on Wednesday.

Watch our video for more with the Beatles, and be sure to tune in to ET tonight for more! ET's Beatles exclusive continues Tuesday.