Strange topic, maybe? But the link is, oddly enough, Rienzi! The choice of Howard Lorriman's arrangement for this year's top section areas made me dig out the all Wagner recording I have by the Canadian Brass and brass of the Berlin Phil and Bayreuth Festival Orchestra, although it is an 'expurgated' version of Rienzi that they perform. Nevertheless, on track 3, Entry of the Guests from Tannhauser, someone (I presume the conductor!) can clearly be heard 'vocalising' a rhythm - not, I guess, through any need to convey what the rhythm is supposed to be, but probably as a result of having a deep affinity and loving of the music and allowing himself (in this case Edo de Waart) to get carried away! All the same, I'm surprised it wasn't edited out! Nevertheless, on the LSO Live label, Sir Colin Davis' frequent vocal intrusions can't be edited out! The pianist Glenn Gould was also famous for 'sounding off' So do any conductors occasionally 'forget themeselves' as they immerse themselves in the music and 'sing' or at least vocalise the passages you're conducting? Ever done it on a contest stage?....... ;-) I don't think I have in performance (certainly have in rehearsal!), but perhaps if one does, they don't even realise!