Silent Alarm is the debut studio album by British indie rock band Bloc Party. Recorded in Copenhagen and London in mid-2004 with producer Paul Epworth, it was released in February 2005 on Wichita Recordings. The record peaked at number three on the United Kingdom Albums Chart. In the United States, it entered the Billboard 200 at number 114 and the Billboard Top Independent Albums at number seven. The double A-side "So Here We Are/Positive Tension", "Banquet", and "Pioneers" were released as singles. Silent Alarm went on to achieve worldwide sales of over one million copies.

Bloc Party aimed to create an album that appealed to followers of different musical genres. Building on the arrangements in their demo songs recorded in 2004, the band members moulded tracks largely through live takes during the Silent Alarm studio sessions. The compositional focus was on rhythm and the drum and bass parts, while lyricist Kele Okereke's writing examined the feelings and hopes of young adults, including views on global politics. Following the album's completion, Bloc Party embarked on promotional tours before its release.

Silent Alarm garnered widespread critical acclaim with praise often centered on its fast tempo and passionate delivery. Later in 2005, it was remixed as Silent Alarm Remixed and was re-released with bonus tracks to coincide with Bloc Party's worldwide touring schedule. The album has received accolades throughout the music industry since its release.

In 2003, Bloc Party consisted of guitarists Kele Okereke and Russell Lissack, and bassist Gordon Moakes. After drummer Matt Tong auditioned and joined the trio, the band members' songwriting evolved and they started crafting tracks for Silent Alarm. Discussing the first demo "She's Hearing Voices", Okereke has stated that it "was really just a drum beat, which was something we couldn't do before because we relied on writing songs only with guitars". Self-recorded in a small, hired space in Acton, London, the song was followed by the May 2004 double A-side single, "Banquet/Staying Fat", produced by Paul Epworth. Bloc Party EP was subsequently released by Moshi Moshi Records in the UK, containing all three previous songs and new material.

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