29 May 2019, 10:33 | Updated: 29 May 2019, 10:36
Jake Slack, Tom Abisgold, Noah Key and Jacob Swann make up Chapter 13, who appeared on Britain's Got Talent in the hope of finding success as a rock band in 2019.
The four boys are all aged between 13 and 15, and aimed to impress judges Simon Cowell, Amanda Holden, David Walliams and Alesha Dixon on the ITV talent show with a Stevie Wonder medley.
And impress they did, as they won Amanda Holden's Golden Buzzer to head straight to the live semi-finals.
But where did they meet and have they had success before? Here's all the important facts:
Who are Chapter 13 and what are their names?
Chapter 13 are a young band made up of four musicians who met while appearing in the West End musical School of Rock.
They are:
Jake Slack, 15, guitarist
Tom Absigold, 15, singer and guitarist
Noah Key, 15, drummer
Jacob Swann, 14, guitarist
Jake played Zack in Andrew Lloyd Webber's School of Rock, and has also appeared in the Sky Atlantic series Britannia.
Tom also played Zack in the musical, Noah has appeared in several other stage shows including Elf and the X Factor spoof I Can't Sing, and Jacob played Matthew in School of Rock.
What have they done as a band so far?
It's still early days for the boys, but they have already rubbed shoulders (and impressed) the likes of McFly and Busted.
They provided two songs for a musical version of McFly member Tom Fletcher's novel The Creakers.
They played their first ever gig together in September 2018 in Camden, London.
Are they on Instagram?
Yes, you can follow the band on their journey at @wearechapter13.
They have posted several shots of their beginnings as a band, and from various live gigs in recent months, including teasers of their own songs such as 'I H8 U'.
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