Lost in Music, He’s the Greatest Dancer, Thinking of You and We Are Family – many artists would long for just one of these songs at any time in their career, but for Sister Sledge they all appeared on a single side of one of their albums. As she brings these and the rest of the disco group’s still-sensational catalogue to the Electric Paradise festival this summer, Kathy Sledge will be joining us to answer your questions.

Kathy is one of four Sledge sisters along with Debbie, Joni and Kim, who formed the group as children in the mid-1960s, picking up gigs at churches and local events in their home city of Philadelphia as the Sledge Sisters. After flipping the name around, they got a record deal and their first chart success came in the UK in 1973, with the Top 20 hit Mama Never Told Me.

Further commercial success eluded them for a few years – though that’s no reflection on the quality of early disco material such as Pain Reliever – until their label paired them with Chic’s Nile Rodgers and Bernard Edwards. Sister Sledge’s poise and charisma shone from the aforementioned hits the pair wrote for them, collected on the album We Are Family. The title track reached No 2 in the US and it, along with the others, endure as pinnacles of the disco era.

Remixed versions of those songs came back around in 1984 and 1993, each to great success particularly in the UK, though the group’s only UK No 1 single was in a very different style in 1985, with the swaying neo-60s pop of Frankie.

Kathy took the lead vocal on some of their biggest hits, and after Sister Sledge went on hiatus in 1987, she had a solo career interspersed with occasional Sister Sledge reunions, and later – amid some legal wrangles with her sisters – solo tours of Sister Sledge material. Next up she’ll perform at Electric Paradise in Milton Keynes, on 8 August, alongside other legends of the era such as Grace Jones, Candi Staton, Kool and the Gang and more.

Now 67, Kathy has been in countless nightclubs and recording studios around the world across her multi-decade career, so there’s plenty to ask her. Post your questions in the comments below before 6pm GMT on Wednesday, and we’ll publish her answers later in the week.