Find a copy of Holst The Planets with Sir Adrian Boult conducting The New Philharmonia Orchestra & Chorus (EMI ASD 2301). If your system doesn't reproduce the astonishingly-deep soundstage captured by EMI's engineers, you need a better system. ;-)
The first time I heard the LP I was flabbergasted; the percussion instruments at the back of the orchestra sounded further away than was the wall behind the Magneplanar Tympani loudspeakers. And the percussion section was obviously on a riser; the delicate sound of the triangle floated above the rest of the orchestra. Height information!