Sunny Day Real Estate is an American alternative rock band from Seattle, Washington, known for being one of the pioneering groups in the emo genre. Formed in 1992, the band gained critical acclaim with the release of their debut album "Diary" in 1994, which is considered a seminal work in the emo and alternative rock music scenes. The band's musical style has been described as emo, indie rock, alternative rock, post-hardcore, post-punk, and post-grunge, showcasing their diverse influences and contributions to the evolution of these genres.

The group's lineup consisted of founding members Jeremy Enigk (vocals, guitar), Dan Hoerner (guitar), William Goldsmith (drums), and Nate Mendel (bass). Their music and legacy have had a significant impact on the emo and alternative rock movements, influencing subsequent generations of musicians. The band's discography includes several influential albums, such as "Diary," "LP2," "How It Feels to Be Something On," and "The Rising Tide." Despite disbanding and reuniting at various points, Sunny Day Real Estate's contributions to the music industry have solidified their status as iconic figures in the alternative rock and emo music scenes.