What is taking back sunday you re so last summer?

Taking Back Sunday is an American rock band formed in Amityville, New York in 1999. "You're So Last Summer" is a song from their debut album, "Tell All Your Friends," released in 2002. The song was written by lead vocalist Adam Lazzara and former guitarist John Nolan. It was one of the band's most commercially successful songs, reaching #25 on the US Billboard Modern Rock chart. The song's catchy melody and lyrics about a failed romance resonated with fans. "You're So Last Summer" is considered a quintessential emo song and is often cited as a defining moment in the emo genre.