Emily-Jane Thomas studied with Yvonne Kenny and Theresa Goble at the Guildhall School of Music and Drama from where she obtained her Masters degree with First Class Honours and her Bachelors degree with distinction. Her studies were kindly supported by the Susan Chilcott Scholarship, the Elizabeth Evans Trust, the Worshipful Company of Innholders, the Worshipful Company of Goldsmiths and the Sir John Cass Foundation. In 2010 she won the Roland Jones Award at the National Eisteddfod of Wales. She also studied at the Hochschule für Musik und Theater in Hamburg with William Workman and was a Young Artist on ENO's Opera Works Programme.

Emily-Jane was born and raised in Cardiff. She made her television debut as a soloist on BBC Wales at the age of sixteen. She went on to play the role of Juliet in Andrew O'Neill's production of The Little Sweep, broadcast on S4C, followed by Paquette in Welsh National Youth Opera's production of Candide at the Wales Millennium Centre.

Whilst at the Guildhall, Emily-Jane sang Elmire in Erwin und Elmire, Phyllis in Iolanthe, and in the song recital Childsplay with Iain Burnside. She also performed excerpts from the roles of Adele, Despina, Susanna, Gilda, Madame Goldentrill, Papagena, Cunegonde and Zerbinetta in opera scenes. She played the role of Despina with Martin Lloyd-Evans and David Gowland for British Youth Opera workshops. She also produced and directed Walton's The Bear and Donizetti's Rita at the Guildhall School, accompanied by a chamber orchestra consisting of her GSMD colleagues.

Emily-Jane sang Susanna and Barbarina Le nozze di Figaro in concerts throughout Florence and Siena. She sang in a staging of Messiah (Part II) produced by Sarah Walker and Graham Allum and also worked with Sarah Walker on a number of premieres of new works by GSMD composers. She has also worked with Robin Bowman, Linnhe Robertson, Eugene Asti, Emanuele Moris, Janice Chapman, Stephen Maughan and Jane Robinson.

Emily-Jane's concert engagements have included Mahler's Fourth Symphony, Dvorak Stabat Mater, Barber Knoxville: Summer of 1915, Fauré Requiem, Britten Rejoice in the Lamb, Mendelssohn 'Hymn of Praise', Mozart 'Vespers', Rutter Magnificat, Schumann's Spanisches Liederspiel, Haydn Missa Sancti Nicolai and Haydn Creation under Sir David Willcocks. She has performed as a soloist in Llandaff Cathedral, St David's Cathedral, Bristol Cathedral and Bath Abbey, and as the soprano soloist in Tippett's Spirituals from A Child of our Time on a tour of the UK with the National Youth Choir of Wales. She also sang as a soloist in venues throughout Japan and on Japanese radio with the County of Cardiff High School's Choir. Emily-Jane's recital engagements have included Debussy Mélodie at LSO St Luke's, a recital of Lieder inspired by Goethe texts at St Lawrence Jewry as part of the City of London Festival and a series of concerts of repertoire by female composers, including Clara Schumann, Fanny Hensel, Madeleine Dring, Liza Lehmann, Betty Roe and Ruth Natasha Young. While studying at the Guildhall, she also sang recitals for numerous City of London Livery Companies and was the in-house soprano for the Worshipful Company of Armourers and Brasiers.

Emily-Jane made her Glyndebourne Festival debut as Second Fairy and Second Woman in a new production of The Fairy Queen under William Christie and Laurence Cummings and the Orchestra of the Age of Enlightenment, directed by Jonathan Kent. She made her début at the BBC Proms in this production.

Emily-Jane sang Zerlina Don Giovanni with Opera Up Close at the Soho Theatre and with the Bahrain Symphony Orchestra at the Crowne Conference Center, Bahrain, under Orlando Jopling. She also understudied Flora Turn of the Screw for Opera North, First Witch Macbeth for Scottish Opera and Young One The Golden Dragon for Music Theatre Wales. Other roles include Susanna The Marriage of Figaro (Blackpool Grand Theatre conducted by Robin Newton, directed by Jacopo Spirei); Second Boy The Magic Flute, Borka Borka and understudy Young Paris King Priam (ETO UK tour under Michael Rosewell, directors James Conway and Liam Steel); Frederika A Little Night Music (Opera Project/Longborough Festival under Jon Lyness, director Richard Studer); Barbarina Le Nozze di Figaro and cover Zerbinetta Ariadne auf Naxos (Opera Project/West Green House under Jon Lyness, director Richard Studer); Cis Albert Herring with the BBC Symphony Orchestra under Steuart Bedford at the Barbican; Frasquita Carmen at the Soho Theatre and Musetta La Boheme in a reduced production at the Ravenna Festival.

Emily-Jane's recent concert engagements include the soprano soloist in 'Glorious Handel by Candlelight' with the Mozart Festival Orchestra and Chorus under Steven Devine and with Crispian Steele-Perkins (Barbican Hall and Birmingham Symphony Hall for Raymond Gubbay).

Emily-Jane has recently returned to work following the birth of her first baby, Jack. She is currently performing Frasquita in a UK tour of Opera Up Close's Carmen and preparing to understudy Ferch/Girl in Music Theatre Wales' new production Y Twr, due to tour the UK later this year.