At home in both opera and oratorio, Leif Aruhn-Solén has a particular interest in music from the early Baroque period through Mozart. He has sung in Monteverdi's L'Orfeo and L’incoronazione di Poppea, Purcell’s Dido and Aeneas, Rameau's Les Paladins, and Mozart's Zaide. Recent engagements have also included Decio in Vivaldi’s Ottone in villa with Concerto Copenhagen and Lars Ulrik Mortensen, Osmin in Gluck’s Die Pilger von Mekka at Salzburger Landestheater, Don Ramiro in Rossini's La Cenerentola at the Royal Opera in Stockholm and at Potsdamer Winteroper, Colin in Rousseau's Le devin du village at the Styriarte Festival in Graz, Ritornello in Gassmann's L'opera Seria at the Drottningholm Theatre and the lead role of Lillebror in the world premiere of Lindahl's Karlsson on the roof at Malmö Opera. In the spring of 2013, he received great acclaim for his debut at Opera Queensland in Brisbane in the role of the Evangelist in a staged version of Bach’s St. Matthew Passion. On the concert stage he has performed both as the evangelist and the tenor soloist in Bach's St. Matthew and St. John Passions and Christmas Oratorio. Other often performed tenor solos have included Bach's Mass in B minor, Handel's Messiah and Mozart's Requiem.

Leif Aruhn-Solén has appeared with Grand Théâtre de Genève, Théâtre du Châtelet in Paris, the Royal Opera in Stockholm, Opéra National de Montpellier, the New Israeli Opera in Tel Aviv, Opera Queensland in Brisbane, Glimmerglass Opera in New York, Chicago Opera Theater, Opera Theatre of Saint Louis, Salzburger Landestheater, Malmö Opera and the Göteborg Opera. His orchestral engagements have taken him to several of the world's music centers to perform with such prestigious orchestras as Les Arts Florissants conducted by William Christie, The Netherlands Bach Society, Freiburger Barockorchester, Il Giardino Armonico, Concert Spirituel, Concerto Copenhagen, the Cleveland Orchestra, the City of Birmingham Symphony Orchestra, the National Philharmonic in Washington DC, the Oslo Philharmonic Orchestra, the Jerusalem Symphony Orchestra, the Singapore Symphony Orchestra, the Belgrade Philharmonic Orchestra, the Swedish Radio Symphony Orchestra, the Gothenburg Symphony Orchestra, New Trinity Baroque, the Drottningholm Baroque Ensemble and Rebaroque.

Leif Aruhn-Solén has also recorded extensively. In 2010, a CD with Handel arias, performed together with New Trinity Baroque, was released on Edition Lilac. Other recordings include complete operas by Martín y Soler and Mazzoni on Harmonia Mundi K617, Charpentier's Judicium Salomonis on Virgin Classics and a solo CD with Swedish art songs on Sterling.

Leif sang the role of Rinaldo in our production of Haydn's Armida in June 2016.