Question: What vocalist has a one-off single by Queensrÿche, with former guitarist known for his extensive vocal range, in particular his usage of falsetto?
Sentence (from "Discordia (song)"): "Discordia" is a one-off single by Queensrÿche vocalist Todd La Torre and former Megadeth/King Diamond guitarist Glen Drover, released in August 2014.
Relevant evidence: Yes