Greene also formed the Lost Nite and Crimson record labels.

It has released hundreds of recordings from the vaults of major labels, such as Columbia, Atlantic, RCA Victor, Capitol, Vee-Jay and others, making many available on CD for the first time.

Many of the label's other releases combine the contents of two original LPs on a single CD.

The company also manufactures multi-CD compilation box sets sold exclusively through retailers such as QVC, Costco and Sam's Club.

Both Sides Now publisher Mike Callahan (in his book of CD reviews Oldies on CD), regularly gave early Collectables' CDs low scores based on sound quality.