Here’s how my son put together his book. Split it in three with dividers marked 16 bar cut, 32 bar cut, and Full Song. For each full song you include, pull both a 16 bar cut and a 32 bar cut. We chose songs he knows cold and will not be caught out if they have him sing the entire thing. We tried for a range of styles and difficulty. We had a total of ten songs. We put a table of contents in the front, listing all three categories. We also put a rep list at the front (slid into the inside front cover) with a long more songs he has performed in shows, in recitals, or learned in voice lessons. We split the list by category–Golden Age, Post Golden Age, Contemporary Rock (which is his strength), and classical. I don’t know if this is the best way to do it, but it has worked for us. I made two full folders, one of which his teacher could use in lessons. I brought both to auditions, in case anything was lost or missing. He has a whole separate folder for songs that are “in work”. It’s a lot of scanning and photocopying, but it’s worth it to feel confident you have everything you might need.