Do Duncan Campbell and Jeff Mangum have the same nationality? 
Duncan Campbell (UB40): Duncan Campbell (born 3 April 1958 in Birmingham) is an English musician and current lead singer of the reggae band, UB40. Jeff Mangum: Jeff Mangum (born October 24, 1970) is an American singer, songwriter, and multi-instrumentalist, best known for his work as the lyricist, vocalist and guitarist of the band Neutral Milk Hotel, as well as being one of the cofounders of The Elephant 6 Recording Company.
no