Task: Explanation
Input (English): Weekend is an American lo-fi or shoegaze trio from San Francisco, California. The band formed in 2009 and released two EPs, with the full-length debut album "Sports" coming on Slumberland Records in 2010. The album received an 8.2 rating from Pitchfork Media. It also received 4/5 stars on Tinymixtapes and was also reviewed by National Public Radio, the "Portland Mercury", "Boston Phoenix", "NME", Drowned in Sound, Brooklyn Vegan, The Onion's AV Club, and PopMatters. Question: The band whose style is typified by the blurring of component musical parts was formed when? Answer: 2009
Output (English):  The band formed in 2009 and released two EPs, with the fulllength debut album Sports coming on Slumberland Records in 2010.