Hello

thank you for your response.

Indeed I use the BIAB app to practice with a rhythm, even with an accompaniment with some instruments (bass, guitar) and I appreciate being able to change the tempo, the choice of instruments without having to regenerate the mp3 on my PC.

I also appreciate that I don't need my PC for the Android app to work. AND I have found that the BIAB app can work in standalone mode if the songs have been downloaded from the app for the first time (I'm just looking for a way to do it in bulk).

I do not know Ireal Pro and I will test this app.

Best regards