Music Ucas Points

Are ABRSM Grades 6-8 useful for applying to good universities?
I read that ABRSM practical and theory grades from 6 above can give you ridiculously high UCAS points for something that isn’t too difficult- in my opinion. Is this true?
And since these UCAS point levels are among those of AS subject passes, will they strike a big impact on my UCAS application? If I get AAB (or A*AB since A*s will be available when I start the A-Level course) at my A-Levels and a Practical exam Grade 8 merit would top universities like UCL and Oxbridge (which are two different unis) consider me? Do you have to study music at uni if you pass the ABRSM exams? If you don’t have to will universities advise me to do so?
It does help, somewhat. It really depends what you want to be, if you want to major in music, it will help a lot. But if it has nothing to do with music, it won’t help as much.
BTEC : Performing Arts & Music