He joined the band for its third album and expanded its emotional and stylistic palette with his sinewy, blues-inflected guitar work and brooding baritone vocals.He joined the band for its third album and expanded its emotional and stylistic palette with his sinewy, blues-inflected guitar work and brooding baritone vocals.Read MoreCotton, Paul (1943-2021), Deaths (Obituaries), Poco (Music Group), Pop and Rock Music, Country Music, Illinois Speed Press (Music Group)