邓斯特在2001年的电影《失恋大不同》中首度献唱，表演了[[马克·施艾曼]]（{{lang|en|Marc Shaiman}}）创作的两首歌曲<ref>{{cite news|first=Corey |last=Moss |url=http://www.mtv.com/news/articles/1441324/kirsten-dunst-makes-singing-debut-on-soundtrack.jhtml |title=Kirsten Dunst Makes Singing Debut on Soundtrack |date=2001-10-30 |work=MTV News |accessdate=2013-08-30 |archiveurl=https://web.archive.org/web/20121105100338/http://www.mtv.com/news/articles/1441324/kirsten-dunst-makes-singing-debut-on-soundtrack.jhtml |archivedate=2012-11-05 |deadurl=no }}</ref>。她还为《哈利斯特游艇谋杀桉》演唱了片尾的[[爵士乐]]歌曲《{{lang|en|After You've Gone}}》<ref name="vh1" /><ref>{{cite video|year=2002|title=The Cat's Meow|medium=DVD|publisher=Lions Gate Films}}</ref>。在《蜘蛛侠3》中，她也演唱了两首歌，一首是在[[百老汇]]演出上，另一首则是在一家爵士俱乐部<ref name="vh1" /><ref>{{cite video|date=2007|title=Spider-Man 3|medium=DVD|publisher=Sony Pictures}}</ref>。邓斯特透露这两首歌是先录制下来的，之后拍摄时则只是对嘴形演出<ref name="vh1" /> 。她还出现在了[[野人花园]]的《{{lang|en|I Knew I Loved You}}》<ref name="the insider">{{cite web|url=http://www.theinsider.com/celebrities/Kirsten_Dunst |title=Kirsten Dunst Biography |work=The Insider |accessdate=2010-10-09 |archiveurl=https://web.archive.org/web/20101010083855/http://www.theinsider.com/celebrities/Kirsten_Dunst |archivedate=2010-10-10 |deadurl=yes }}</ref>和[[R.E.M.]]的《{{lang|en|We All Go Back to here We Belong}}》两部[[音乐影片]]中<ref name="cosmv">{{cite web|url=http://consequenceofsound.net/2011/10/video-r-e-m-we-all-go-back-to-where-we-belong-kirsten-dunst-version/ |title=Video: R.E.M.&nbsp;– We All Go Back To Where We Belong (Kirsten Dunst Version) |last=Young |first=Alex |date=2011-10-27 |accessdate=2013-08-30 |publisher=Consequence of Sound |deadurl=no |archiveurl=https://web.archive.org/web/20130605130826/http://consequenceofsound.net/2011/10/video-r-e-m-we-all-go-back-to-where-we-belong-kirsten-dunst-version/ |archivedate=2013-06-05 }}</ref>，并在[[詹森·舒瓦兹曼]]（{{lang|en|Jason Schwartzman}}）2007年的个人专辑《{{lang|en|Nighttiming}}》里演唱了《{{lang|en|This Old Machine}}》和《{{lang|en|Summer Day}}》两首歌曲<ref>{{cite news|url=http://articles.latimes.com/2007/apr/15/entertainment/ca-fasttracks15 |title=Dunst as Harry? The abuse begins |last=Lee |first=Chris |date=2007-04-15 |work=Los Angeles Times |accessdate=2013-08-30 |deadurl=no |archiveurl=https://web.archive.org/web/20121026094328/http://articles.latimes.com/2007/apr/15/entertainment/ca-fasttracks15 |archivedate=2012-10-26 }}</ref>。在一次接受采访时，邓斯特表示自己没有像其他一些演员那样发行唱片的计划，她说：“肯定不会。不可能。要是[[芭芭拉·史翠珊]]还差不多，但我觉得现在有点儿烂俗了。如果是歌手来演电影或者效果会好一些。”<ref name="no album" />