"a lone violin started screaming out of one of the surrounds" is unreal--- unless there really is a violin located there.
My apology to those who have heard me say this before but...
...the most effective multichannel music I have is TACET DVDAs of chamber music where the instruments are individually distributed to the five channels. For example: violin left, viola right, flute center, cello left surround, piano right surround. The effect is to put the musicians in your room as opposed to the usual approach of transporting you to some recording venue. And then there is antiphonal music, composed for two groups of musicians, one of which is usually behind the audience. The spatial effect is part of what the composer intended. Stereo is incapable of reproducing antiphonal music.
My apology to those who have heard me say this before but...
...the most effective multichannel music I have is TACET DVDAs of chamber music where the instruments are individually distributed to the five channels. For example: violin left, viola right, flute center, cello left surround, piano right surround. The effect is to put the musicians in your room as opposed to the usual approach of transporting you to some recording venue. And then there is antiphonal music, composed for two groups of musicians, one of which is usually behind the audience. The spatial effect is part of what the composer intended. Stereo is incapable of reproducing antiphonal music.