Niels van der Steenhoven could probably impersonate anyone he likes.
http://www.youtube.com/watch?v=r2Kx1rSCpvU > I quite like the 21st century version of the band that has released
> "Focus 8" and "Focus 9", but since it's not a "classic" lineup (no Jan
> Akkerman) many Focus purists don't think it's really Focus at all.
> It has van Leer and the material is good and it sounds like Focus
> mainly due to the flute, Hammond and a rather good impersonation of
> Akkerman by the guitarist. YMMV.
> --
> Cheers, SDM -- a 21st Century Schizoid Man