Alison Krauss
As of 2018, she has won 27 Grammy Awards from 42 nominations, tying her for the second most awarded recipient alongside Quincy Jones, second only to classical conductor Georg Solti, who holds the record for most wins with 31. She is the most awarded singer and the most awarded female artist in Grammy history.
Marvin Hamlisch
Hamlisch is one of only 15 people to win Emmy, Grammy, Oscar and Tony awards. This collection of all four is referred to as an "EGOT". He is one of only two people to have won those four prizes and a Pulitzer Prize (Richard Rodgers is the other). He is one of ten people to win three or more Oscars in one night and the only one other than a director or screenwriter to do so.