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
The soul singer released his last LP, 'Voodoo', in 2000
The soul singer appears to be working on his first new material in 14 years
The singer has pulled dates in the US due to a "medical emergency"
R&B singer makes unscheduled appearance at Brooklyn Bowl