R5 is an American pop rock band formed in 2009, originally consisting of members Riker Lynch, Rocky Lynch, Rydel Lynch, Ellington Ratliff, and Ratliff's departure in 2018. The band gained popularity through their energetic music and performances, releasing several EPs and albums, including "Sometime Last Night" in 2015. The group's sound blends elements of pop, rock, and electronic music, appealing to a wide audience. They are known for hits like "Smile" and "Let's Not Be Alone Tonight." R5 has also been involved in various tours and events, showcasing their talent and connecting with fans worldwide.