Hi friends,just a little hint from old Europe: By definition in the pentatonic scale the half steps are omitted, so from the original 7 tones (without the octave, naturally) there remain 5. So you only have do, re, mi, sol, la, (do). Sounds sometimes a little bit like a minor scale, due to the lack of the half step si-do, but the mi gives the flat sound back. Do not mix it with the old church scales (Doric, Lydic etc.; they are all truly heptatonic). First pentatonic song I thought of was Auld Lang Syne, which I learned with the Boy Scouts.
Wilfried