I think Hanon is beneficial.
I think Hanon is beneficial. The main argument agaist it, I think, is that mindless 16th note runs in repetitive patterns will not help you with real music because you don't find mindless 16th note runs in repetitive patterns in music too often.
My argument is this. First of all, there ARE exercises especially for trills, arpeggios, tremolos, thirds, octaves, etc which you do find in music and. As far as the first section (the repetitive patterns) goes, they just help you generally with runs and other technical difficulties in music by giving you strenght and independence in your fingers. It's like exercise for your fingers. Arguing against Hanon is like arguing that lifting weights won't help you in lifting other things that use the same exact muscles.
To put it in perspective, I'd say that practicing Hanon and other exercises would help you in Bach's Prelude No 5 in D from Book 1. True, there are no Hanon exercises that drill you in the exact patterns that you'll find in that particular piece, but with the extra finger strength and independence you've built up, it will be easier for you to play this piece evenly and speedily.
Musicalicality, I know, is a totally different thing, which will not benefit from exercises. Exercises will help you play the piece technically. From there, you have to form an interpretation.
why are there so many threads about Hanon? I honestly think it's the title, it's mindless and 'formulaic' people want to believe if they do this they will be virtuosos. k lel.