aretha franklin

*At a performance Wednesday night outside of Detroit, the Queen of Soul told reporters of her return to music, “glad to be back in it.”

Back from exactly what, however, remains a mystery.

Aretha Franklin told reporters that “the side effects were rough” from her treatment for a condition she will not disclose.

The 71-year-old singer sat at a piano Wednesday inside a Westin hotel in the Detroit suburb of Southfield. She sang Etta James’ “At Last” and told reporters she’s starting on a new album with producers Kenny “Babyface” Edmonds and Don Was.

Franklin says she and Edmonds were supposed to team up in July, but couldn’t because of her medical treatments. She says it was music executive Clive Davis who suggested she collaborate with Was, known for his work with the Rolling Stones, Bonnie Raitt and Willie Nelson.

Franklin canceled several concerts earlier this year for health reasons.