So a total curve ball here....
As I rebuilt/modified my speakers I've been going through my music collection to find the best recordings to test the system. Now I have stuff recorded by Blue Note Records, Columbia Legacy, Naim, Linn, & also Sheffield Lab...
The two albums (The King James Version, & Comin' From a Good Place) originally recorded in a church In Hollywood in 1976 by Harry James & His Band are still the best to test a system to faithfully reproduce the sounds of instruments a varied as a double bass, drums (incredible Les DeMerle), right up to the trumpet of HJ himself..
What makes these so special?...Sheffield Lab recorded these direct to disc, no mixing, one take only, & built the set-up themselves, some of the best & most accurate recordings out there, unfortunately I only have them on "compressed" CD.
YouTube only gives you a flavour.....
Harry James and Buddy Rich - Cherokee 1964 - YouTube
"Tuxedo Junction" Harry James And His Music Makers 1965 - YouTube
Harry James "Two O' Clock Jump" Oct 23, 1971 - YouTube