Dianne Reeves returns to Spoleto USA's Wells Fargo Jazz series Wednesday night. Reeves is among the world’s preeminent jazz vocalists, and a standard by which others inevitably measu re themselves. While jazz is the basis of her repertoire, she interprets songs from all corners of music, a reflection of a trend from her youth when listening audiences routinely crossed genres with ease. Today, she remains focused on moving forward into new material. Her artistic devotion has earned five Grammy Awards. Her first studio album in five years, Beautiful Life, won for Best Jazz Vocal Album at the 2015 Grammys.