There have been plenty of single-disc Doobie Brothers collections released over the years. There have been two-part vinyl Best of the Doobies, there have been budget-line collections, and there have been OK overviews as well as excellent generous discs with all the big hits. There's even been a comprehensive four-disc box, but what there hasn't been is a double-disc set – something that falls between the conciseness of 2001's terrific Greatest Hits (the first CD to contain all the big hits on one CD) and 1999's four-disc Long Train Runnin' 1970-2000. That's what 2007's The Very Best of the Doobie Brothers is, a double-disc helping of the Doobies' biggest songs from "Listen to the Music" to "The Doctor."
The Isley Brothers are an American musical group originally from Cincinnati, Ohio, originally a vocal trio consisting of brothers O'Kelly Isley, Jr., Rudolph Isley and Ronald Isley. The group has been cited as having enjoyed one of the "longest, most influential, and most diverse careers in the pantheon of popular music". The inclusion of younger brothers Ernie Isley (lead guitar, drums) and Marvin Isley (bass guitar), and Rudolph's brother-in-law Chris Jasper (keyboards, synthesizers) in 1973 turned the original vocal trio into a self-contained musical band. For the next full decade, they recorded top-selling albums including The Heat Is On and Between the Sheets.