I downloaded my lyrics files as PDFs onto the iPad and iPhone. Whilst I don't take the iPad with me to clubs, (although when doing concerts it is used as an interface between guitar and mixer) I do have the iPhone as it is well, my phone.

I do find that sometimes checking up a lyric before getting up helps these days, (age Mather, age.) As the iPhone is great for that, I suppose the Kindle would be too.

Just out of interest, I downloaded Kindle for iPad and find there are far more books available than through Apple Books, and usually at a better price when they both stock. If I didn't have the iPad, I would buy a Kindle machine and I rate them to be great in every respect.

Thinking on, most phones are capable of downloading and viewing PDFs, so as a memory aid, it beats having paper files collapsing all over the pub floor.