I can definitely give a big up to Ella Fitzgerald as well - listening to that Lady is like listening to heaven. Also try A Kind of Blue by Miles Davis or Blue Train by John Coltrane both are rightly acknowledged as being amongst the greatest jazz albums of all time. Personally, I don't like the title 'smooth jazz' as it is used as a catch all term for all sorts of garbage (ie. the aforementioned elevator music and worse - ie. Kenny G and his ilk!!).
Jacques Loussier - really recommended
George Benson
Acker Bilk
Jazz Butcher Conspiracy
Ray Charles
Oscar Peterson/Louis Armstrong
Sonny Rollins
Claire Martin
Best of Blue Note
Please report back with reviews of what you end up getting.
Noted. Thanks. Indeed the names you have mentioned are the Masters of Jazz. Music, like other art forms, keeps on evolving and changing with times. But Jazz is one of the most soothing forms of music available for listening.