Bad sorting in LMS 8.1.1 and artistas

Hi:

I have a collection of 1200 local discs

When ordering by Artist, there are several (4 o 5) that are not correctly sorted

I.e Bryan Adams appear in letter ‘A’
David Bowie appears in letter ‘S’
New order also appears in letter ‘S’

Where can be the problem?

Regards

JP