'Joanne singer' used to sing in a Led Zep covers band before she became famous.

Lady Gaga showed off her metal chops during an appearance on The Howard Stern Show earlier today (October 27).

When the host asked the singer about her pre-fame stint in a Led Zeppelin covers band, she responded by belting out a few bars of ‘Black Dog’.

She also explained to Stern how the vocal cords work, using an unexpected anatomical comparison – watch below.

Gaga also showed off her a cappella singing skills during her recent appearance on James Corden’s Carpool Karaoke segment.

Meanwhile, last weekend saw her play two songs from her new album ‘Joanne’ on SNL: ‘A-Yo’ and latest single ‘Million Reasons’.

Read more: ‘Joanne’ – the NME verdict and review

Gaga recently spoke to NME about David Bowie’s son Duncan Jones’ criticism of her controversial tribute to The Thin White Duke at this year’s GRAMMYs.

“It did hurt,” she told NME. “But what are you going to do? I can’t… it’s his father, you know. Whatever he was feeling in that moment I have compassion and love for him. But yes, of course it hurt. I still have to trust and believe in myself as a Bowie fan. I’m not his family, and the thing is, that’s his father. His father is not David Bowie, his father is David Jones.

“I’m sure that was difficult to watch and of course, I called many people on David’s team before I even begun doing that project and it’s unfortunate, what can I say? But God bless of him, you know?”

Meanwhile, Gaga remains among those rumoured to be playing Glastonbury 2017. She has recently responded to the Glastonbury rumours and tour plans.