We have not yet seen the end of Beatles' fandom; when my daughter was born in 1998, there was a line of John Lennon clothing with his illustrations, and this book was first published in 2009. Perhaps Baby Boomers are having great grandchildren, and Gen Xers like myself are starting to become grandparents?
This is not the first picture book to highlight song lyrics, and not even the first for a Beatles' song: Candlewick put out a version of Yellow Submarine in 2018, and Jullien illustrated Lennon's Imagine in 2017. There's also Hughes' illustrations for Parton's Coat of Many Colors, and to get a little more modern, the photoillustrated version of Williams' Happy. If you tear up just thinking about this Beatles song, this is definitely a book to investigate!