Random Access Memories is the fourth studio album by the French electronic music duo Daft Punk, released on 17 May 2013 by the duo's imprint Daft Life and Columbia Records. The album pays tribute to the late 1970s and early 1980s era of music in the United States, particularly the sounds of said era that emerged from Los Angeles. This theme was reflected in the promotional campaign for the album that included billboards, television advertisements and a web series, as well as in the album's packaging. Unlike their previous albums, Daft Punk recruited session musicians to perform live instrumentation in professional recording locations, and limited the use of electronic instruments to usage of drum machines, a custom-built modular synthesizer and vintage vocoders. The album features collaborations with Giorgio Moroder, Panda Bear, Julian Casablancas, Todd Edwards, DJ Falcon, Chilly Gonzales, Nile Rodgers, Paul Williams and Pharrell Williams. It is the first album by the duo to be released by Columbia Records.