OK Go's Damian Kulash and Tim Nordwind tell PEOPLE about their playful music videos and reflect on breaking the internet in an unexpected way dancing on treadmills in "Here It Goes Again." ...

But that musical milestone in space history could have looked very different, because Katy Perry isn't the first performer ...

People were shocked when realising a woman dressed in a towel dress took to the stage for karaoke only for the the iconic music legend who wrote the song she was singing was in the audience ...