Sorry, there's not a bass player near me, so I hope someone will take pity on a composer who wants to get it right but also stretch the envelope a little bit. If my attachment has come through, you'll see that I'd like to write a pizzicato double-stop at the low end of the instrument. I don't think the glissando will be a problem, as long as you can play bottom F and bottom C# to begin with. In my mind the F could be played with the thumb. Non-standard, certainly, but this is for a solo, and I expect the player to be very good (although I don't know who it will be). Am I dreaming? Many thanks.