Beyoncé Knowles took the stage at NYC's Roseland Ballroom to perform a second date in her string of four at the venue. She organized the last-minute concerts from Sunday on and off through Friday to feature music from her new album, 4. During the shows, she's also been singing some of her old hits for fans. Beyoncé's tracks aren't the only new recordings she's done, as her husband Jay-Z's Watch the Throne, which came out last Tuesday, features a single with her vocals called "Lift Off." Jay was in Miami over the weekend partying at the LIV nightclub and dropping $300,000 on champagne and service at his and Kanye West's release party. The guys had a reason to celebrate, because Watch the Throne broke the iTunes record for the most single-week sales in history! With 290,000 downloads, they unseated Jay's pal Chris Martin's 2008 Coldplay release Viva La Vida or Death and All His Friends. Jay lavished praise on Beyoncé instead of bragging about his own accomplishment in a recent interview. Jay-Z compared Beyoncé to Michael Jackson, saying, "What I've learned from her is similar to what I learned from Mike [Jackson] — and I know that's blasphemy to compare the two because Mike was such an innovator — but I think she's like the second coming."