Spoiler: You’re about to watch a mesmerizing rendition of the Beach Boys’ hit “God Only Knows” as performed by more than two dozen acclaimed artists.

On Tuesday (Oct. 7), the star-studded video was released to celebrate the launch of BBC Music, the network’s new music venture, and to raise money for BBC Children in Need.

The video features an overwhelming number of musicians from across various musical genres, which collectively form, as BBC puts it, “The Impossible Orchestra.” Together they work together to give “God Only Knows” — the song previously served as the opening music for HBO’s “Big Love” — an imaginative spin.

“All of the artists did such a beautiful job I can’t thank them enough,” says Beach Boys’ Brian Wilson in a press release. “I’m just honoured that ‘God Only Knows’ was chosen. ‘God Only Knows’ is a very special song. An extremely spiritual song and one of the best I’ve ever written.”

Take a look at the video to see if you can spot every single artist, including “The Voice” coach Pharrell Williams. Then check out the list below to see how well you did.

In order of appearance:

1. Martin James Bartlett (16-year-old pianist and BBC Young Musician of the Year winner)

2. Pharrell Williams

3. Emile Sande (known for performances at the London Olympic Games in 2012)

4. Elton John

5. Lorde

6. Chris Martin (of Coldplay)

7. Brian Wilson

8. Florence Welch (of Florence and The Machine)

9. Kylie Minogue

10. Stevie Wonder

11. Eliza Carthy (English folk musician)

12. Nicola Benedetti (Scottish violinist)

13. Jools Holland (musician and host of “Later… with Jools Holland”)

14. Brian May (of Queen)

15. Jake Bugg

16. Katie Derham (BBC Radio 3 and BBC Arts presenter)

17. Lauren Laverne (musician and BBC 6 Music DJ)

18. Gareth Malone (star of BBC Two’s “The Choir)

19. Alison Balsom (classical trumpeter)

20-24. One Direction (Niall Horan, Zayn Mailk, Liam Payne, Harry Styles and Louis Tomlinson)

25. Zane Lowe (British DJ)

26. Jaz Dhami (bhangra music artist)

27. Paloma Faith (singer-songwriter)

28. Chrissie Hynde (of The Pretenders)

29. Jamie Cullum (pop-jazz musician)

30. Baaba Maal (singer and guitarist)

31. Danielle de Niese (opera singer)

32. Dave Grohl (of Foo Fighters)

33. Sam Smith

How did you do? Did you spot any other stars?

Posted by:Casey Rackham