Singing legend Aretha Franklin is set to undergo emergency surgery for a ‘mystery illness’ in the US today.

The 68-year-old singer announced she was cancelling all concert dates and personal appearances in May on doctors orders and recently spent a week in Detroit’s Sinai-Grace Hospital for a ‘serious illness’.

A prayer vigil was held in Detroit for the singer, after which she released a statement thanking the City Council, saying ‘all prayers are good’.

We’re sending this to the soul motown diva we HEART from all at showbiz-i…..