Battle Studies (album)

Battle Studies is the fourth studio album by American singer-songwriter John Mayer, released on November 17, 2009, by Columbia Records. The album represents a shift away from the blues rock style of Mayer's previous album, Continuum, towards a more pop and soft rock sound, drawing influence from artists such as Fleetwood Mac and Eric Clapton.

The album's title refers to the term used for relationship analyses and self-reflection following a romantic conflict or breakup. The themes explored throughout Battle Studies largely center on love, loss, and the complexities of relationships.

The album spawned three singles: "Who Says," "Heartbreak Warfare," and "Half of My Heart" (featuring Taylor Swift). Battle Studies debuted at number one on the Billboard 200 chart in the United States and received generally positive reviews from critics, although some noted the departure from Mayer's earlier sound. It has since been certified platinum by the Recording Industry Association of America (RIAA). The album also features collaborations with artists like Robbie McIntosh and Pino Palladino, who contributed to the instrumentation.