A longtime producer for David Bowie did an interview last week where he said recording tricks and things like Auto-Tune are ruining music these days and he ended up starting a beef with ADELE in the process.
His name is Tony Visconti, and he used her as an example of someone who does have an amazing voice. But he basically said that even with her, you have to wonder if they messed with her voice in the studio to make it sound better.
WARNING: NSFW Language