I finaly came up with\once \override TrillSpanner.Y-offset = #-2 \startTrillSpan a4*5 \stopTrillSpan
But got an error 'unbound TrillSpannEvent' and nothing has changed. So how do I move that TrillSpanner southwards? (version 22.2.1)
Thanks. vriendelijke groet, Erik Appeldoorn