Sindre Langhelle (/ˈsɪndrɛ ˈlɑːŋhələ/; born August 3, 1990), known professionally as Rocky Kramer (/ˈrɒki ˈkreɪmər/), is a Norwegian-American guitarist, singer, songwriter, composer and bandleader from Trondheim who is now based in Los Angeles.

[5][6] The next year, he released the single "Rock Star" from his debut album Firestorm, together with a well-received animation over live-action music video,[7] exceeding a million views on Facebook.

"[13] In 2021, it was announced that Kramer had been cast to play the character "Lars Olsen" in the Aaron Lee Lopez directed feature film Rockin' in Time, due in theaters in 2025.

[18] In February of 2024, Kramer returned to East West Studios in Hollywood, with a brand new band to record an upcoming album entitled "Alone In The Rain" along with the Rockin' In Time movie Soundtrack.

[36][37] Throughout the Pandemic Lockdown, Kramer has released additional cover videos of Foo Fighters "The Pretender",[38] Linkin Park "Breaking The Habit,"[39] Edwyn Collins "A Girl Like You,"[40] CHVRCHES "Keep You on My Side,"[41] Queen "The Show Must Go On,"[42] and Genesis "Mama.

"[43][44] On November 19, 2020, organizers of the "'Let Me Help' Celebrity Benefit Concert" announced that Kramer would join Steve Vai, Slash, Verdine White (Earth, Wind & Fire), Suzy Quatro, Martha Davis (The Motels), Chad Smith (Red Hot Chili Peppers), Ozzy and Sharon Osbourne and many others, in a concert "to benefit those devastated by COVID-19, bullying, and prostate cancer" to be aired on November 24, 2020.

[45][46] On September 11, 2021, Kramer appeared at the 9/11 Celebrity Benefit Concert in New York City, commemorating the twentieth anniversary of the World Trade Center attacks, performing "The Star Spangled Banner" on guitar along with Joey Belladonna, lead singer for Anthrax on vocals, Charlie Z (DRMAGDN) on drums and NO Mansfield (Revolushn) on bass guitar.

Kramer additionally played "Some Kind of Wonderful," with Jon Butcher, and performed his chart topping single "Rock Star."

One reviewer wrote: "Rocky Kramer killed it on both songs, but the real magic came when he took center stage to perform his hit single 'Rock Star' off his first studio album 'Firestorm.

He was joined by superstars including Paul Anka, Tony Orlando, Bonfire, Ten Years After, Leland Sklar (Toto, James Taylor), Kenny Aronoff (John Mellencamp, Smashing Pumpkins), John Lodge (Moody Blues), Jon Davidson (YES), Alex Skolnick (Testament), Tony Moore (Iron Maiden), Kenny Marquez (Renegade), YNG Zuck, and a barrage of others.

[55] In February of 2024, Kramer announced that he was recording his debut album, "Alone In The Rain", along with the Rockin' In Time movie soundtrack, at the famed East West Studios in Hollywood, with a line-up of keyboardist Allison Picioni, bassist Mike Clairmont and drummer Lamar Little.

Owing to the efforts of his school's host family matriarch, Kramer met noted guitarist, Mike Pinera (Alice Cooper, Iron Butterfly & Blues Image), who introduced him to Allied Artists Music Group, who signed him to a recording contract and petitioned for an "extraordinary ability" visa.