It will be reissued as a two disc, white vinyl collection on April 21
The event takes place July 1-4 in Poland
R&B singer performed 'The Charade' and 'Really Love'
Performance will mark D'Angelo's first television appearance since surprise release of 'Black Messiah' album
Studio engineer and tour manager discuss influence of Michael Brown's death on 'Black Messiah' release
Record is singer-songwriter's first in 14 years
Track may feature on singer's forthcoming new album 'Black Messiah'
The record is rumoured to be released next week
The singer will visit in February of next year as part of a wider European tour