Thank you Rob for your response. I am using a cheap separate stand-alone iPad for the lyrics as PDF files and that works for me. I'm playing the BIAB comping tracks on my MacBook where I have created them. But it would be better to play them on a second iPad and avoid carrying my main computer around. Some years ago I trialled the previous BIAB iPad/iPhone IOS version from 2017 (and earlier). It was using a "rendered" mp4 or wave file of the BIAB song, plus the BIAB SGU file. (You had to create both file types for each song using BIAB on your computer and then download them to the iPad App. The iPad App played the song and showed the chord chart with the cursor moving through the chart whilst playing, ie not "scrolling" which is what I prefer). That old App was the predecessor to the current iPad App we are talking about. It was quite basic but worked for me to some degree and I used it as a backup, just incase my Laptop computer had a problem during performance. Unfortunately the developers seem to have given up with that approach and now want to create a cut-down stand-alone iPad App which is too basic for my needs and is not allowing the BIAB songs that I created on my MacBook to play correctly. And I certainly won't use that new basic iPad App to create my backing tracks, it's too basic for that...