Music Matters Jazz (MMJ) is widely regarded as one of the finest audiophile jazz reissue series ever produced, featuring over 112 meticulously remastered Blue Note Records titles across multiple formats (45 RPM Definitive Series, 33 RPM Series, and premium SRX High Definition Vinyl). Founded around 2007-2008 by Ron Rambach and Joe Harley in collaboration with Acoustic Sounds, every release was mastered directly from original Blue Note recording tapes in an all-analog signal chain by expert engineers with over 100 years of collective experience, prioritizing original tape integrity and delivering exceptional clarity and dynamic range. Available in limited production runs with premium packaging including laminated gatefolds and detailed liner notes, Music Matters Jazz releases established a higher standard for jazz reissues and have become highly collectible, with prices rising significantly on the secondary market due to their scarcity, selective distribution, and reputation for delivering “audio nirvana” fidelity that influenced subsequent reissue initiatives across the industry.