HDtracks.com is a high resolution digital music site offering digital rights management-free music in multiple formats as well as cover art (and liner notes via PDF file downloads for a majority of catalog offerings) with CD-quality and master recording quality download selections.
Origins and Expansion 
The company was privately founded  by David and Norman Chesky of the audiophile recording company Chesky Records, and is based in New York, NY. They opened on March 21, 2008, initially offering only CD-quality 44.1khz audio files in AIFF format from a small offering of independent record labels, including audiophile record company catalogs from Chesky Records, Reference Recordings, 2L, and blues labels like Alligator Records. Shortly after its initial launch, HDtracks.com began offering higher sample and bit rate recordings such as 96 kHz/24bit, 192 kHz/24bit and other higher resolution than CD sound files with a focus on jazz, classical music, adult-oriented rock, and historic recordings targeting adult consumers looking for an alternative to lesser-quality compressed mp3 files.
- The Ultimate Digital Music Guide: The Best Way to Store, Organize, and Play Digital Music - 2011 - Pearson Books (http://www.informit.com/store/ultimate-digital-music-guide-the-best-way-to-store-9780789748447)
- Wall Street Journal (http://blogs.wsj.com/accelerators/2012/12/03/part-i-build-it-they-will-come-passion-vs-analytics-in-product-launch/)
- Stereophile Magazine (http://www.stereophile.com/news/032308hdtracks/)