Keith Urban had some interesting words to say when asked about Miley Cyrus.

Urban sat down with Fitzy and Wippa With Kate Ritchie podcast on Sept. 5, where he gave Cyrus a bizarre compliment.

“I love that voice, man, that voice. She sounds like an ashtray — and I mean that as a compliment,” he says.

“I literally mean that as a compliment,” Urban adds.

Urban has previously shared his adoration for Cyrus, having covered her massive hit “Flowers.”

Related: What Keith Urban Must Have Backstage at Every Show

Cyrus is not the first pop star that Urban has praised: In recent months, he has also covered Taylor Swift‘s song “Anti-Hero” as well as Ariana Grande‘s “We Can’t Be Friends.”

In addition to performing their songs, Urban has praised both Swift and Grande.

“I mean, God, Taylor’s songwriting, it’s so extraordinary. There’s really no adjectives for it,” he told People. “She’s such a great, great writer. So this new album [The Tortured Poets Department] is just more proof of that in really great ways.”

When it comes to Grande, Urban likes her voice as he likes Cyrus’.

“She doesn’t sound like anyone. It’s like Taylor. I like singers that you know their voice immediately, and there’s a lot of other singers that sound like them, but they don’t sound like anyone,” he says.

“Ariana has always had that unique vocal gift. On top of that, she’s a phenomenal writer and producer,” he adds.

He further praised Grande by calling her song “We Can’t Be Friends” his “current obsession song.”