The group RED Velvet (RED Velvet) heralded a cool and vibrant transformation. According to his agency SM Entertainment on the 27th, RED Velvet's new Mini album title song "Birthday" Music Video Teaser video will be released on YouTube's SMTOWN channel at 6 p.m. The title track "Birthday" is a trap rhythm-based pop dance song that samples George Gershwin's "Rhapsody in Blue" and combines rhythmic drums with cool synth sounds. In the lyrics, there is a confession that "if you are with me, every day will be as happy as your birthday" and that you will return to your favorite birthday and make all the wishes you have imagined and present an unforgettable day. Especially, this Music Video will be able to meet the cool new song atmosphere and the cool and youthful charm of RED Velvet, and it is expected to attract attention by adding vivid colors and colorful animation effects. RED Velvet's new Mini album 'The ReVe Festival 2022 - Birthday' will be released on various Music sites at 6 pm on the 28th and will be released on the same day.