Headstrong is the debut studio album by American singer Ashley Tisdale, released on February 6, 2007, by Warner Bros. Records.

The performer worked with a variety of established writers and producers on the album, including Diane Warren, J.R. Rotem, Ryan Tedder, Evan "Kidd" Bogart, Bryan Todd and Kara DioGuardi, among others.

Additionally, the album incorporates hip hop beats, while some tracks infuse dancehall and some styles of world music.

The album, lyrically, discusses themes central to modern teen pop, such as broken hearts, crushes and self-confidence.

Many music critics compared this first effort to the debut albums of fellow Disney Channel-alums Britney Spears and Christina Aguilera.

Additionally, Diane Warren, David Jassy, Guy Roche, Shelly Peiken, Sarah Hudson, Samantha Jade, and Bryan Todd were the other remaining music veterans that worked on the project, with the rest being relatively unknown writers.

[4] While the album does not contain credited featured artists, Jassy, Jack D. Elliot, Keely Pressly, Lauren Christy, Scott Spock, Graham Edwards, Kara DioGuardi, Victoria Sandstorm, Windy Wagner, Bryan Todd, Tata Young, and Marissa Pontecorvo provide background vocals on tracks.

[6] Headstrong derives mainly from the genres of pop, electropop, and R&B while incorporating dance-pop themes and hip hop and dancehall elements.

The title track "Headstrong" mixes "slinky" verses with cheerleader chants like Stefani's "Hollaback Girl."

[6] "Not Like That," which contains influences of Middle Eastern music, covers the topic of the "familiar misunderstood-celebrity," but was referred to as more "worked up" than "whiny.

"[6] Containing rap interludes by Tisdale and clap along beats,[9] according to Gary Graff of Billboard, the song is also liking to Stefani.

[11] Additionally, Tisdale performed cuts from the album during her solo set list on High School Musical: The Concert.

Heather Phares of AllMusic rated the album 3 out of 5 stars and commented, "her voice is pleasant enough, but it's not especially distinctive, and she's not helped by a batch of songs that aren't nearly as charming as High School Musical's tunes.

"[4] Phares also said that although the album wasn't winning considering the high-profile songwriters and producers involved, "it's fine for anyone who just wants to hear more of Ashley Tisdale's -- and not Sharpay Evans' -- singing.

"[4] Jon Dolan of Blender said Tisdale did not import her "spunky" High School Musical character in the album, and that even with the quality of producers, "no stylistic slipper fits right.

"[10] Gary Graff of Billboard said Tisdale went, "the contemporary CHR school of fellow Mouse products Britney Spears and first-album Christina Aguilera—lots of synthesizer-laden, beat-heavy, layered-vocal dance tracks" that varied between "come-hithers" and "self-affirming anthems.

"[9] Overall, Ross said, "Although the album fails in places, it is ll [sic] a worthy attempt by an up-and-coming pop artist to please her audience.

[22][23] On June 3, 2008, the album was certified Gold by the Recording Industry Association of America (RIAA) for sales of over 500,000 units.