I've been working on Suite 1 of the Bach suites for solo cello as transcribed by David Cooper. I am slowly making improvement (articulation, phrasing, breathing etc) but have one consistent problem. There are a bunch of low F's scattered throughout (pedal F? - the one below low C). In the notes Cooper suggests playing them 123 with both 1st and 3rd slides out. I do this (well I use the third slide - don't have a trumpet with a first slide), but can't make them sound as proper notes. For example in the Courante (3rd movement) there are low F's in the 3rd and 4th bars in the middle of phrases, that for me always sound like fart-y noises rather than notes somewhere in the vicinity of F. I can play pedals down from F# - none of them sound like 'real' notes, but I can at least play them. But within a phrase I don't seem to be able to even hit the F right on. Its somewhere between E and G. Is it really possible to play such low F's as proper notes? I know I am not good enough now, but am wondering if the low low F will ever sound like a real note?