See Harry's debut solo performances.
He also capped off the show by performing brand new track "Ever Since New York", a laidback Fleetwood Mac-esque track that saw Harry strumming a guitar while harmonising with his 5 piece band:
Harry kept with SNL tradition and participated in a few hilarious skits, including one where he played his musical hero, iconic rocker Mick Jagger:
And another where he played a civil war soldier:
At one point in the Jagger skit, Harry appears to deny going solo (at least in the Zayn sense...) when he quips: "Why would anyone in a successful band go solo?"
Regardless, Harry's solo career is off to a very strong start, with "Sign Of The Times" debuting at #1 in the UK, Scotland and Australia. Styles next live performance will be on April 21 on The Graham Norton Show.
For international fans, GossipCop has some universal video links.