16 of the best-ever musical guests on children's TV

When big-name music acts appear on kids' TV shows, things don't always go to plan.

It's a secret long known by dads and moms the world over, but the best bands always go on children's TV shows.

Here, from the sublime (classic Stevie Wonder) to the ridiculous (scantily-clad Katy Perry), the bizarre (Toasted Heretic) to the beautiful (The Roots) is a rundown of our favourites…