Unheard David Bowie tracks to be released?

The very literal cover of David Bowie’s “Blackstar”, released by Columbia Records in the U.S.

A day after David Bowie lost his secret 18-month battle to cancer, his music played on.

“Over the years, we have performed David Bowie’s music both at live shows and just futzing around in the rehearsal space”, Toadies guitarist Clark Vogeler says in one of the band’s reminiscences on the website. The Official Charts Company revealed on Monday that the release had combined sales so far of 43,000 – 25,000 ahead of his closest competitor, Elvis Presley’s If I Can Dream.

Jimmy also said that he and David used to exchange emails with each other from time to time. It features the haunting track Lazarus, which poignantly opens with the lyrics: “Look up here, I’m in Heaven”.

Brits boss Max Lousada said the “extraordinary life and work” of the “visionary and ground-breaking” three-time award victor would be celebrated at the ceremony at London’s O2 on February 24.

The video for Lazarus depicts Bowie levitating from a hospital bed.

“It was then that I realized that it may be the last time I would see him”, he said.

Visconti admitted he was “knocked sideways” when he learnt of Bowie’s death – but does not know the details of what happened in his final days.

Speaking about how she’s coping, former model and fashion activist Bethann Hardison told PEOPLE: “She’s fine”.

In fact, Bowie called his longtime producer Tony Visconti during the week before his death on Sunday (Dec. 10) to discuss work on a follow up to Blackstar.

The show will take place on March 31 at 8 p.m. The concert is a “benefit for a variety of music education programs serving underprivileged youth”, according to the Carnegie Hall site.