Kaleidoscope Heart is the third studio album by American singer-songwriter Sara Bareilles, which was released on September 7, 2010, through Epic Records.

[4] Bareilles stated on her website the reason behind the album's title, "I picked out the name of the record months before I even finished writing the songs.

[19] Stephen Thomas Erlewine from AllMusic rated the album with 4 stars out of 5 and has claimed positively that "Despite lushly detailed arrangements, Bareilles never pushes this distinctly commercial gift too hard, letting the songs flow easily and this gentleness is almost as appealing as those classically constructed melodies, tunes so softly insistent they could conceivably appear on adult contemporary charts anytime from 1971 to 2010".

[20] Ann Powers from Los Angeles Times claimed that "The singer-songwriter's background in university show choirs serves her well here, as she finds strength in complex vocal arrangements and the sorts of dramatic set-ups that have reminded us, through Fox's popular television show, that the very act of raising our voices can be a hugely liberating act".

[21] Mikael Wood from Entertainment Weekly was favorable, saying that "On Kaleidoscope Heart, sometimes, as in the airless Breathe Again, all that earnest yearning can make you feel like you've been sentenced to life at Lilith Fair".

[22] Will Hermes from Rolling Stone gave a rating of 2.5 stars (out of 5) and a mixed review, analysing that "Bareilles veers between fellow pianists Alicia Keys and Regina Spektor, avoiding either's extremes".

[23] Another mixed review, came from Enio Chiola from PopMatters, who claimed that "Although Kaleidoscope Heart was probably intended to prove Bareilles' staying power, it only confirms suspicions that in some years, she'll be as remembered as Michelle Branch, or Tracy Bonham, still making music, but without any of the mass appeal they once enjoyed".

[24] Kaleidoscope Heart debuted at number one on the US Billboard 200 chart, selling 90,000 copies in its first week, according to Nielsen SoundScan.