Rachmaninoff was still a pianist of the old school, even though he lived in the recording era. He considered music a visual as well aural experience, because the only you could hear music was at a live performance. Many great composers write passages for visual effects. Those interlocking hands in that prelude just LOOK really cool. Take also, for example, instances of hand crossing in Liszt which are somewhat unnecessary. If you look at Rachmaninoff's prelude op. 23 #4, you'll maybe see what I mean. It begins with a sort of accompanying figuration in the left hand, and after two bars the right hand (melody) enters. It's an awkward, leaping accompaniment, so naturally many people cheat and use both hands. However, IMO this detracts from the visual effect of the right hand entrance. When preparing music for a performance, we might do well to think how we look beyond wearing fancy clothes.
As I never perform and never attend concerts visual effects have no significance at all.
This was made in reference to Rachmaninov's Prelude in c sharp minor and it's opening interlocking cords, and the question of whether to refinger or not.
Another thing which happened by accident in one of my concerts The lightning technician asked me if I would mind if he changed colors of the light as I played. I agreed and the result was amazing. The guy knew classical piano very well and changed colors to highlight the feeling of the music. When I looked back at the video of the concert I was so impressed with the color changes, When things got exciting the colors where light yellow, orange, when it became slower, sader, darker colors on stage, it was really amazing, it gave the music more life.I have also played for the deaf with an electric piano connected to a computer which showed the notes I played and also went through colors. There is actually some music made with color for the deaf, I really forgot what it was, but I am sure someone here would know about it.
Since I play this piece, I will go out on a limb and say that the reason that Rachmaninoff wrote the piece with these "interlocking chords' had nothing to do with any visual effect, but had more to do with making the piece more interesting for the performer to play.
Perhaps. Relieve boredom? But could the visual be part of it too?When I say visual effects I mean more the actual process of playing the instrument, appearance of hand position, etc. and how the way you play a piece could perhaps add to the interest and understanding of the audience.