A performance is always a performance of something. that "something" can be performed as many times as you want and is what you call "an idea" isnt it? That idea is what all the performances of the same work are sharing and comunicating. So yes, there is something that you reach when hearing music that is beyond the performance elements.
But there is a good reason to avoid the understanding of music as something which is all about ideas in that sense: the fact that there is no idea without performance. What you hear is always a performance of an idea, not an idea in itself (How could be that? you cannot hear ideas in the same way that you cannot smell colours) The only way to "reach the idea" is through the perfomance, which obviously involves the (re)production of sounds.
Imo, thinking in music in such idealistic way is reducing its essence to the aspects of harmmony, leit motiv and structure. But the richness of the music is also in relation with the beauty of certain sounds in themselves, and also with that mix of musical inteligence and technical excelence that is always present in every good performance and cannot be written in the score.
But there is a good reason to avoid the understanding of music as something which is all about ideas in that sense: the fact that there is no idea without performance. What you hear is always a performance of an idea, not an idea in itself (How could be that? you cannot hear ideas in the same way that you cannot smell colours) The only way to "reach the idea" is through the perfomance, which obviously involves the (re)production of sounds.
Imo, thinking in music in such idealistic way is reducing its essence to the aspects of harmmony, leit motiv and structure. But the richness of the music is also in relation with the beauty of certain sounds in themselves, and also with that mix of musical inteligence and technical excelence that is always present in every good performance and cannot be written in the score.