Thanks for your help guys. I use a Roland R70 drum machine and an Emu Proteus sound module for strings, keyboard etc. played in to the project in Cubase. When I came to mix down a song the audio was there ie vocals, guitars, bass but no midi ie drums or keyboard. When I had Cubase VST in the nineties it was simple enough - just mute all tracks except midi drums and record an audio track and an audio drum track was created. The best you tube clip so far is - YouTube but it wasn’t fully explained. I hope this makes more sense. Regards, Barry.