- How Taylor Swift and Imogen Heap Wrote “Clean” Before Dinner Music + Essentials
- How Imogen Heap Made 2014’s ‘Clean’ with the ‘Immaculate’ Taylor Swift: ‘She Is Extremely Efficient’ (Exclusive) People.com
- “What I learned, I suppose, is just she’s very good in the studio, and she knows what works”: Imogen Heap on Taylor Swift’s “extremely efficient” songwriting and recording process MusicRadar
- Imogen Heap reveals she and Taylor Swift made 2014 tune Clean within one day Yardbarker
- Taylor Swift’s secret collaborator Imogen Heap speaks out about ‘1989’ session The News International
