QUOTE(sarah-flute @ May 14 2006, 09:32 PM)

On the flute?
They're where you do jumps in 3rds...
*thinks*
So for instance, F major you would play F A G Bb A C Bb D etc etc
Make sense??
Thanks! - yes I did mean flute, sorry I forget that things like that can mean something entirely different on say a violin or piano. I had toyed with the idea that it was something to do with harmonics and the "third" note you get when you overblow an octave, but that just seemed too complex - thank goodness it wasn't that
So, I think I understand it now...by thirds you mean two notes further up the same scale, interspersed into the scale itself....but I'm now wondering , "why?"

Is this a common device in any particular type of music? I've just cleaned my flute out thoroughly before putting away for the night so I don't want to get it out again to try and play one, and I just can't "hear" it properly in my head until I've played it, to work out what's going on. I'll have a bash tomorrow and let you know how I get on!
Thanks
Hazel