Acappella Showdown, Part 4

Curtis Mayfield

Vintage

Spellbound

Sun Ra

The Isley Brothers

Bert Kaempfert

Remaining Few

The Cosmic Rays

Francis Scott Key

Milt Gabler

Hoagy Carmichael

Paul Winley

The Nutmegs

The Channels

Fred Parris

The Jarmels

Verne Allison

Jimmy Kennedy

Goffin And King

Lew Brown

Redd Evans

Sam H. Stept

Charles Tobias

Hugh Williams

Marshall Paul

Decibelles

The Balladeers

Austen Croom-Johnson

Billy Ward

Charles Orio

Calvin Barron

Ed Wells

Blue Stars

Adam Jackson

The Calendars

Alan Nelson

The Endings

Bop Shop

Street Corner Five

Classic Harmony

Magic Moments