Klemperer's vision on the work of his mentor Mahler, even if the directory is unfortunately remained relatively small, is unique especially for its "amoralist" relatively "harsh" and for slow tempos (the same is the seventh questionable, and that's the only downside that we could possibly put on the entire cabinet). For me Klemeper in Mahler remains unsurpassed and I warmly recommend it to those who love and are interested in the great music of the great Austrian composer.