Leslie is Principal Clarinettist of Welsh National Opera, he was appointed by Maestro Carlo Rizzi almost twenty-five years ago.
Before he joined Welsh National Opera he was guest Principal clarinet with major orchestras such as:
- The Royal Philharmonic
- London Symphony
- London Chamber Orchestra
- London Musici
- and many other ensembles.
He has had a prolific Film and T.V. recording session career and was one of London’s most sought-after recording musicians in film studio soundtrack work and for jingles (T.V. and radio advertisements).
During Leslie’s very first appointment as Principal Clarinet with an Opera Orchestra (age twenty one) he studied the Italian – opera clarinet repertoire with Maestro Franco Ferraris, learning much about the style and tradition of that art form and it is from Ferraris he developed a great affinity for Italian Opera, eliciting numerous compliments and accolades for his solos in live performances and broadcasts particularly on BBC Radio 3 where he has frequently been singled out by name for his work.
Leslie’s work as a teacher and pedagogue is known internationally and he is considered one of Britain’s foremost teachers of clarinet and one of the most exciting players in the English style. Leslie gives lessons at the Royal Welsh College of Music and master classes throughout U.K. in most of the major teaching establishments and has written a teaching/playing treatise about the clarinet, called “Instant Help for Playing and Teaching the Clarinet” which is recommended reading on the ABRSM Diploma Course reading list.
Solo Concertos and appearances on T.V.
Leslie has played many concertos all over the world notably on television in the UK: the Mozart concerto live from St David’s Hall Cardiff, the Fantasia da Concerto “La Traviata” on T.V. in South Africa and Weber 2nd concerto in Portugal.
He performed the 2nd performance of the Alun Hoddinott first concerto at the Royal College of Music shortly after its recording by Gervase De Peyer in the 1970’s. He has also been the dedicatee of several concertos written for him: notably the “Pied Piper of Hamelyn” by Vasco Hexel and the Concerto “Ambidexterity” by Roma Cafolla.
Chamber CD recordings with “2CELLOS” Stjepan Hauser and friends
Before he became world renowned “2CELLOS” star Stjepan Hauser recorded two CD discs with Leslie and since then has had huge success and was signed by Sony records to record numerous albums.
Leslie has also recently been partnered in recitals by Michael Pollock with whom he has recorded for CD both of the Brahms Sonatas, plus the beautiful Sonata by Nino Rota (composer of the Godfather score) also on that particular disc “Rota Centenary” (to celebrate the 100th anniversary of Rota’s birth) Leslie is joined by Yoko and Stjepan to perform the Rota trio for Clarinet Cello and piano.
Leslie is also featured on solo discs and numerous chamber music recordings, some of which have been written especially for and dedicated to him – notably, many of the works on the “Expressions” disc of lyrical contemporary pieces and the Concerto for clarinet and strings by Christopher Ball plus the Clarinet Quintet by Christopher Ball and the new CD “Inspirations” featuring the music of Roma Cafolla with virtuoso friends.
Orchestral and studio work
He has a vast recital repertoire and has also performed many concertos in countries as distant as America, Canada, South Africa, most of Europe and for many international Radio and T.V. networks. In his role as a principal clarinettist, he has recorded with:
- Vladimir Ashkenazy
- Gidon Kremer
- Alfredo Kraus
- Bryn Terfel
- Jose Carreras
- Placido Domingo
- Renee Fleming
- Marcello Alvarez
- Stjepan Hauser
- and many other great artists.
Films and Jingles
During his freelance career in London, he was highly sought after in studios, playing on soundtracks for films and for TV series and commercials. Films he played for include:
- Howards End (with Anthony Hopkins)
- Mickey Blue Eyes (with Hugh Grant)
- The Pope Must Die (with Robbie Coltrane)
- The Wicker Man (original version with Britt Ekland and Edward Woodward)
- The Pirate Prince
- and many more.
T.V. series include amongst others:
- House of Eliott
- Soldier, Soldier
- Anna Lee
- The Michael Aspel Show
He appeared also on the soundtrack for the background music to the Barcelona Olympics with Placido Domingo and Sarah Brightman.
He also played for West End Shows such as Phantom of the Opera and was a member of the chamber ensemble (hand chosen by Michael Reed – Andrew Lloyd Webber’s former executive musical director) for Aspects of Love and featured on the cast albums and compilation discs of most of Andrew Lloyd Webber’s musical hits.
Leslie also recorded for many commercials including:
- Lindt chocolates
- and many other household brands.
As well as numerous classical and operatic orchestral discs he also recorded backing tracks for:
- Charlotte Church
- Cilla Black
- Michael Ball
- Michael Crawford
- Barry Manilow
- Rod Stewart
- The Pet Shop Boys
- Richard Clayderman
- and many others.
Leslie’s specific Mouthpiece Design
Leslie has been working on mouthpiece facing design for over forty years and designed his own brand of clarinet mouthpiece, manufactured in the United States exclusively for Leslie (by Bradford Behn, possibly the finest mouthpiece craftsman in the world) and is sold from his website and used by many of Britain’s leading players and various clarinettists all over the globe.