Question: What nationality is the performer of song Tweedlee Dee?
Sentence (from "Tweedlee Dee"): The backing vocals are provided by Atlantic's in-house backing group at the time, The Cues (credited here as The Gliders), consisting here of first tenor Abel DeCosta, second tenor Ollie Jones (formerly of The Ravens), bass Edward Barnes, and baritone (and songwriter)
Relevant evidence: No