Although technical discussions are interesting to composers, I suspect that the truly magical and spiritual powers of music arise from deeper levels of our psyche. ↗
I am certain that most composers today would consider today's music to be rich, not to say confusing, in its enormous diversity of styles, technical procedures, and systems of esthetics. ↗
Other, far fewer, directors are more like the composer - conceptualizing the piece, scoring it, distributing its musical lines among a range of registers, chords, and instruments. ↗
I would advise my young colleagues, the composers of symphonies, to drop in sometimes at the kindergarten, too. It is there that it is decided whether there will be anybody to understand their works in twenty years' time. ↗
The composers could no longer direct all performances in person, and so the responsibility of interpreting their works in the spirit in which they had been conceived was placed upon conductors. ↗