![Michael Clifford, left, and Calum Hood of 5 Seconds of Summer performs at the the iHeartRadio Music Festival & Village on September 20, 2014, in Las Vegas, Nevada. Photo by Francis Specker Michael Clifford, left, and Calum Hood of 5 Seconds of Summer performs at the the iHeartRadio Music Festival & Village on September 20, 2014, in Las Vegas, Nevada. Photo by Francis Specker](https://c8.alamy.com/comp/HX0H01/michael-clifford-left-and-calum-hood-of-5-seconds-of-summer-performs-HX0H01.jpg)
Michael Clifford, left, and Calum Hood of 5 Seconds of Summer performs at the the iHeartRadio Music Festival & Village on September 20, 2014, in Las Vegas, Nevada. Photo by Francis Specker
![5 SECONDS of SUMMER (Michael Clifford, Luke Hemmings, Calum Hood, Ashton Irwin ) 8x10 Music Photo Signed In-Person at Amazon's Entertainment Collectibles Store 5 SECONDS of SUMMER (Michael Clifford, Luke Hemmings, Calum Hood, Ashton Irwin ) 8x10 Music Photo Signed In-Person at Amazon's Entertainment Collectibles Store](https://m.media-amazon.com/images/I/51HVNbKSSAL._AC_UF1000,1000_QL80_.jpg)
5 SECONDS of SUMMER (Michael Clifford, Luke Hemmings, Calum Hood, Ashton Irwin ) 8x10 Music Photo Signed In-Person at Amazon's Entertainment Collectibles Store
![5 Seconds of Summer's Michael Clifford Calls Calum Hood 'The Perfect Bassist' | 5 Seconds of Summer, Ashton Irwin, Calum Hood, Luke Hemmings, Michael Clifford | Just Jared Jr. 5 Seconds of Summer's Michael Clifford Calls Calum Hood 'The Perfect Bassist' | 5 Seconds of Summer, Ashton Irwin, Calum Hood, Luke Hemmings, Michael Clifford | Just Jared Jr.](https://cdn.justjaredjr.com/wp-content/uploads/headlines/2015/11/5-seconds-of-summer-rolling-stone-australia.jpg)
5 Seconds of Summer's Michael Clifford Calls Calum Hood 'The Perfect Bassist' | 5 Seconds of Summer, Ashton Irwin, Calum Hood, Luke Hemmings, Michael Clifford | Just Jared Jr.
![Michael Clifford and Calum Hood of 5 Seconds of Summer performing live at Barclaycard Arena on June 05, 2015 in Birmingham, United Kingdom Stock Photo - Alamy Michael Clifford and Calum Hood of 5 Seconds of Summer performing live at Barclaycard Arena on June 05, 2015 in Birmingham, United Kingdom Stock Photo - Alamy](https://c8.alamy.com/comp/2H4Y008/michael-clifford-and-calum-hood-of-5-seconds-of-summer-performing-live-at-barclaycard-arena-on-june-05-2015-in-birmingham-united-kingdom-2H4Y008.jpg)
Michael Clifford and Calum Hood of 5 Seconds of Summer performing live at Barclaycard Arena on June 05, 2015 in Birmingham, United Kingdom Stock Photo - Alamy
![5 Seconds of Summer, Luke Hemmings, Calum Hood, Ashton Irwin, Michael Clifford - Stock Image - Everypixel 5 Seconds of Summer, Luke Hemmings, Calum Hood, Ashton Irwin, Michael Clifford - Stock Image - Everypixel](http://st2.depositphotos.com/1694341/5388/i/450/depositphotos_53887679-5-Seconds-of-Summer-Luke-Hemmings-Calum-Hood-Ashton-Irwin-Michael-Clifford.jpg)
5 Seconds of Summer, Luke Hemmings, Calum Hood, Ashton Irwin, Michael Clifford - Stock Image - Everypixel
![5 Seconds of Summer, Luke Hemmings, Calum Hood, Ashton Irwin, Michael Clifford – Stock Editorial Photo © Jean_Nelson #53889769 5 Seconds of Summer, Luke Hemmings, Calum Hood, Ashton Irwin, Michael Clifford – Stock Editorial Photo © Jean_Nelson #53889769](https://st2.depositphotos.com/1694341/5388/i/950/depositphotos_53889769-stock-photo-5-seconds-of-summer-luke.jpg)
5 Seconds of Summer, Luke Hemmings, Calum Hood, Ashton Irwin, Michael Clifford – Stock Editorial Photo © Jean_Nelson #53889769
![L-R) Ashton Irwin, Michael Clifford, Calum Hood and Luke Hemmings of 5 Seconds of Summer arrives..., Stock Photo, Picture And Rights Managed Image. Pic. TAC-166265 | agefotostock L-R) Ashton Irwin, Michael Clifford, Calum Hood and Luke Hemmings of 5 Seconds of Summer arrives..., Stock Photo, Picture And Rights Managed Image. Pic. TAC-166265 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/eb4f03af9d61c50cd0909a5821d16db7/tac-166265.jpg)
L-R) Ashton Irwin, Michael Clifford, Calum Hood and Luke Hemmings of 5 Seconds of Summer arrives..., Stock Photo, Picture And Rights Managed Image. Pic. TAC-166265 | agefotostock
![5 SECONDS of SUMMER (Michael Clifford, Luke Hemmings, Calum Hood, Ashton Irwin) 8x10 Music Photo Signed In-Person at Amazon's Entertainment Collectibles Store 5 SECONDS of SUMMER (Michael Clifford, Luke Hemmings, Calum Hood, Ashton Irwin) 8x10 Music Photo Signed In-Person at Amazon's Entertainment Collectibles Store](https://m.media-amazon.com/images/I/51FJsfYtXOL._AC_UF1000,1000_QL80_.jpg)
5 SECONDS of SUMMER (Michael Clifford, Luke Hemmings, Calum Hood, Ashton Irwin) 8x10 Music Photo Signed In-Person at Amazon's Entertainment Collectibles Store
![Stream I Can't Remember - Michael Clifford & Calum Hood by Mikki | Listen online for free on SoundCloud Stream I Can't Remember - Michael Clifford & Calum Hood by Mikki | Listen online for free on SoundCloud](https://i1.sndcdn.com/artworks-bZF47oTOwLDjJrOH-xzUZKg-t500x500.jpg)
Stream I Can't Remember - Michael Clifford & Calum Hood by Mikki | Listen online for free on SoundCloud
![Photo: Michael Clifford, Calum Hood, Luke Hemmings and Ashton Irwin attend the 43rd annual American Music Awards in Los Angeles - LAP20151122532 - UPI.com Photo: Michael Clifford, Calum Hood, Luke Hemmings and Ashton Irwin attend the 43rd annual American Music Awards in Los Angeles - LAP20151122532 - UPI.com](https://cdnph.upi.com/pv/upi/a0834e0ba5287093279573707f2eaf56/AMERICAN-MUSIC-AWARDS.jpg)