My top three favourite composers are Gustav Mahler, Wolfgang Amadeus Mozart, and J. S. Bach, for their music express all emotions of the universe. In fact, I regard Mahler’s Symphony No. 2 (Resurrection) as one of the greatest symphonies of all time, and I recommend performances by Bernstein/London Symphony Orchestra and Abbado/Lucerne Festival Orchestra.
Another favourite symphony of mine is Symphony No. 4 by Johannes Brahms and its recording by Kleiber/Vienna Philharmonic Orchestra. This piece stops time and places the listener in an ethereal dimension that reality seems to be far away.
Some YouTube recommendations: