This week In One-Off Collaborations 44/52

Bonnie Raitt & Crosby Stills and Nash, Tony Bennett & k d Lang, Omara Portuondo & Natalia Lafourcade, Celine Dion & Ne Yo, Mariah Carey & Joe, Maroon 5 & SZA, Patti Austin & Kurt Elling, Carlos Santana & Los Lobos, Elton John, Eric Clapton…

This week In Soul Artists 37/52

Stevie Wonder, Otis Redding, LaBelle, Raphael Saadiq, Destiny's Child, Bobby Womack, Tina Turner, New Edition, Erykah Badu, Nina Simone, Anita Baker, Lionel Richie

This week In Male Balladeers 31/52

Tony Bennett, Randy Newman, Elvis Costello, Jimmy Buffett, Robert Cray, Leonard Cohen, Otis Taylor, Paul Anka, Eric Sardinas, Ben Harper, Jack Johnson, ‎Adam Duritz, Buddy Guy

This week In Singing Ladies 09/52

PJ Harvey, India Arie, Hannah Reid, Norah Jones, Rickie Lee Jones, Ann Wilson, Esperanza Spalding, Duffy, Martha Wainwright, St. Vincent, Laura Mvula, Lauren Mayberry

This week In Guitar Virtuosi 05/52

Carlos Santana, John Scofield, Bill Frisell, Marc Ribot & Mary Halvorson, George Benson, James Blood Ulmer, Otis Rush & Eric Clapton, Kenny Wayne Shepherd, Joe Bonamassa, Prince, Steve Hackett, Toni Iommi