| Phantasy of Spring | Feldman, Zimmermann, Schönberg, Xenakis; Carolin Widmann, Simon Lepper | CD | 6 | | ECM New Series | 2113 | 028947633105 |
| Lieder | Alma Mahler, Gustav Mahler; Karen Cargill, Simon Lepper | CD | 15 | | Linn Records | CKD453 | 691062045322 |
| Lieder | Alma Mahler, Gustav Mahler; Karen Cargill, Simon Lepper | Digital Media | 15 | | Linn Records | | |
| Songs for His Muse | Debussy; Gillian Keith, Simon Lepper | CD | 20 | | Deux-Elles | DXL1154 | 666283115420 |
| Nights Not Spent Alone: Complete Works for Mezzo-Soprano | Jonathan Dove; Kitty Whately, Simon Lepper | CD | 31 | | Champs Hill Records | CHRCD 125 | 5060212591289 |
| BBC Music, Volume 27, Number 5: Finzi: Earth and Air and Rain | Finzi; Ashley Riches, Catriona Morison, Fatma Said, Anna Tilbrook, Simon Lepper, James Vaughan, Roger Vignoles | CD | 14 | | BBC Music Magazine , BBC Radio 3 | BBCMM432 | [none] |
| Epic – Lieder & Balladen | Stéphane Degout, Simon Lepper | CD | 12 | | Harmonia Mundi | HMM 902367 | |
| Proud Songsters: English Solo Song | Michael Chance, Tim Mead, Lawrence Zazzo, Ruairi Bowen, James Gilchrist, Andrew Staples, Gerald Finley, Ashley Riches, Mark Stone, Simon Lepper | CD | 21 | | King’s College | KGS0052 | 0822231705222 |
| Heart & Hereafter: Collected Songs of Samuel Coleridge-Taylor | Samuel Coleridge-Taylor; Elizabeth Llewellyn, Simon Lepper | Digital Media | 25 | | Orchid Classics | | |
| Fleur de mon âme | Karen Cargill, Simon Lepper | CD | 18 | | Linn Records | CKD 652 | |
| The Path of Life | Franz Schubert;Ilker Arcayürek,Simon Lepper | CD | 18 | | Prospero | | |
| Burnished Gold | Robyn Allegra Parton, Simon Lepper | CD | 26 | | Orchid Classics | ORC 100228 | |
