Jay Z and his band rehearsed in the sound stage room in April 2009.

The crew spent one full day connecting cables and setting up all of the gear.

The band (including phenomenal drummer Tony Royster Jr.) rehearsed for 2 days.

Tthen Jay Z came for the final day (escorted by 3 stretch Hummers) to work with the band.

They were a first class operation with only the best digital boards, etc.