MusicHound
MusicHound Blues: The Essential Album Guide, MusicHound Folk: The Essential Album Guide, MusicHound Lounge: The Essential Album Guide to Ma, MusicHound R&B: The Essential Album Guide, MusicHound Rock: The Essential Album Guide, MusicHound Swing: The Essential Album Guide, MusicHound World: The Essential Album Guide
All Music Guide
Comprehensive guide to recordings in every genre. Cross-indexed source of reviews, essays, and ratings; all available online, on in-store kiosks, and in print form. Uses submissions from readers.
Gramophone Classical Good CD Guide
Brief description of the guidebook to classical music.
Hot Wacks Press
Publisher of guides to bootleg records and CDs. Information about the books, and three articles about bootlegs (recordings of live music of questionable legality).
Joel Whitburn's Record Research Books
Information from Billboard magazine's major charts with complete chart data on every recording ever charted. Short descriptions and sample pages from this large line of books.
Krause Publications
Publisher of several record and CD collecting related books, including price guides.
Muze
Longtime publisher (over 50 years) of directories of recorded music for retail stores; their data is now available for purchase to place on other websites and in-store kiosks.
Osborne Enterprises and Jellyroll Productions
Producer of price guides (in the "Official Price Guide" series) and reference books for music collectibles. General descriptions of each volume.
RecordResearcher.com
CD-ROM discography RockRom 8, and book Rock Record 7, with 500,000 records, over a million tracks and musicians. Free sofwared demo download.
Rough Guides
Over 30 music guidebook titles; features online versions of their Rock, World, and Classical guides.
Trouser Press
Official site of Trouser Press magazine (1974-1984) and the Trouser Press Record Guides. Reviews and discographies from five editions of the guidebook.