"Na Na Hey Hey Kiss Him Goodbye" is a 1969 song written and recorded by Paul Leka, Gary DeCarlo and Dale Frashuer, attributed to a then-fictitious band Steam. It was released under the Mercury subsidiary label Fontana and became a number-one pop single on the Billboard Hot 100 in late 1969, and remained on the charts in early 1970.

Smile is the sixth studio album by American singer Katy Perry. It was released on August 28, 2020, by Capitol Records, three years after its predecessor Witness (2017). Perry worked with various producers on the album, such as Josh Abraham, Carolina Liar, the Daylights, G Koop, Andrew Goldstein, Oligee, Oscar Görres, Oscar Holter, Ilya, Ian Kirkpatrick, the Monsters & Strangerz, Charlie Puth, Stargate and Zedd. She described Smile as her "journey towards the light, with stories of resilience, hope, and love". Primarily a pop record, Smile is characterized by themes of self-help and empowerment.