WATCH: Chad Smith Plays Drums With Babymetal Dressed As Their Kami Band
20 December 2016, 17:07 | Updated: 20 December 2016, 17:10
The Red Hot Chili Peppers drummer also surprised lead singer Su-metal with a birthday cake.
Chad Smith donned white makeup and a black wig to play drums with Babymetal this weekend.
The Red Hot Chili Peppers drummer turned up on stage during the trio's set at Chili's final London show at The O2 Arena on Sunday night (18 December) dressed as one of their Kami band.
Once the Japanese trio played their Gimme Chocolate hit, the band returned to perform their Judas Priest medley of Painkiller and Breakin' The Law, with Chad on percussion.
The Dark Necesssities drummer also presented the band's lead singer, Su Metal, with a birthday cake, leading the crowd in a rendition of Happy Birthday to celebrate her turning 19.
Watch the moment it unfolded, courtesy of mrfujisawa below:
Meanwhile, Red Hot Chili Peppers have been forced to postpone their Irish tour dates, "due to illness".
Due to illness Red Hot Chili Peppers have been forced to postpone their 3Arena, Dublin shows tomorrow and Wednesday. https://t.co/Tg2SILCo89— Red Hot ChiliPeppers (@ChiliPeppers) December 19, 2016
A statement on their website explains: "We are so sorry that we cannot come to Dublin as planned for the next few days. Anthony has been fighting off the flu all week and after the show last night it was clear that he has to stop touring and recover, hence the decision to push back the shows to next year.
"Both shows have been rescheduled to September 20th and 21st 2017 with tickets valid for the new dates as below.
"Tickets for Tuesday, December 20 will be valid for Wednesday, September 20.
"Tickets for Wednesday, December 21 will be valid for Thursday, September 21."
See their newly scheduled Dublin dates below:
Thursday 21 September - 3Arena, Dublin