The Modern Jazz Quartet - The Last Concert (Quadio) Available For The First Time In Over 50 Years Transferred From The Original Half-Inch Four-Channel MastersBlu-ray With 192/24 Resolution Quadraphonic And Hi-Res Stereo Mixes. THE LAST CONCERT captures the Modern Jazz Quartet at the Avery Fisher Hall in 1974, performing a series of their greatest hits. Featuring Thelonious Monk's "Round Midnight," George Gershwin's "Summertime," and Milt Jackson originals. Quadraphonic sound, or 4. 0 surround sound, utilizes four audio channels connected to four speakers positioned at the corners of a listening space. The multi-tracked audio is mixed dimensional, immersing the listener in an expansive soundscape.