You might not expect a comedy routine during a conversation with Robert Plant and Alison Krauss.

But the rock ‘n’ roll lion and the bluegrass chanteuse who became an unlikely musical pair 17 years ago with their rootsy collaboration “Raising Sand” are relaxed, playful and exceptionally respectful of each other.

And very funny.

In a joint interview a few days before the June 2 launch of another summer of touring behind “Raise the Roof,” their 2021 acclaimed follow-up to the Grammy-winning “Raising Sand,” the pair begin by disagreeing about when their last tour ended (it was July) and tease each other while answering how they might change the set list for this run of dates.

“We haven’t started yet, but we have 39 shows. so I think we’ll consolidate and play to our strengths initially,” Plant says.

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“And then we’ll play to our weaknesses,” Krauss jokes.

“See what I’m dealing with?” Plant responds with mock exasperation.