clementine mentioned another one of his great records - At The Vortex - The Rwo Seasons is in the same vein - Evan is in his "free jazz mode"
other good starting points (my taste run towsrda his tenor playing - although I also like the soprano stuff - much of it is the amazing circular breathing stuff - and this playing adapts itself more to abstract less jazz like forms or solo playing (not that there's anything wrong with that.
Elf Bagatellen - Schilippenbach Trio - a rare studio recording from the great trio with Paul Lovesna & Parker - from 1991 on FMP
Most Materiall - duo with Eddie Prevost - many people count this as one their favorite Parker recordings - 2 CD set on matchless from 1997 - as stunning and as accomplished as Coltrane's classic Interstellar Space. There is not another saxophone player alive who is worthy of the comparison
The Ayes Have It - emenen - 2 sessions, single CD - 1983 with Paul Rogers and Jamie Muir - Muir is outrageously good here - 1991 session with Wolter Wierbos, Paul Rogers & Mark Sanders - this one is full bore and features the wonderful trombonist in an more aggresive and excitable mood - as with The Two Season, Mark Sanders lights buildings on FIRE - the man is a relentless groove machine