It’s the summons that dozens of young, gifted, beautiful female musicians have received over the past four decades, from Sheila E to Wendy & Lisa to Lianne La Havas. The call from Prince, in which he oozed admiration for your skills and invited you to his Paisley Park HQ in Minneapolis. For Kandace Springs, a soul-jazz singer and pianist from Nashville, it was a message he sent to one of her social media accounts in 2014. “Hi,” it read (the i represented by the symbol of an eye, this being a pioneer of emojis).