"The Indispensable Fats Waller, Volumes 3 & 4" is part of a series of compilation albums that showcase the work of the legendary jazz and stride pianist, Fats Waller. These collections are highly regarded for their comprehensive coverage of Waller's most influential and memorable performances. Volumes 3 and 4 specifically might include a range of his recordings from a particular era, featuring some of his best-known songs and instrumental pieces. Fats Waller was renowned for his playful musical style, his mastery of the stride piano technique, and his ability to inject humor and charisma into his music, making these volumes a treasure for fans of early jazz.