Hilary Duff

Duff became widely familiar through Lizzie McGuire before releasing Metamorphosis in 2003. So Yesterday and Come Clean gave the album its principal points of entry, combining direct lyrics with polished pop-rock arrangements. Come Clean in particular used atmosphere and a gradually opening chorus to make the performance feel larger without requiring an overwhelmingly forceful vocal.

A self-titled album followed in 2004, retaining a strong guitar presence. The early records were closely connected to the youth-pop culture around them, but the better songs had clear musical identities of their own. The singing was often most effective when it stayed conversational, letting an emphatic instrumental figure or a carefully placed harmony supply part of the energy.

Dignity arrived in 2007, with With Love, Stranger and Play with Fire making a decisive move toward electronic dance-pop. The more clipped rhythmic setting suited a different kind of delivery: short phrases could become part of the groove, and the production could suggest tension without asking the singer to dramatise every word.

Breathe In. Breathe Out. followed in 2015 after a long gap between studio albums. Sparks placed a conspicuous pop hook inside a contemporary electronic arrangement, while other material made room for acoustic colour. Hearing that record alongside Metamorphosis and Dignity reveals a career shaped by changes in production as well as audience, with Duff learning different ways to make a recognisable vocal personality work inside them.