Montero performed John Williams' "Air and Simple Gifts" with Itzhak Perlman, Yo-Yo Ma, and Anthony McGill at the inauguration of U.S. president Barack Obama on January 20, 2009, although the music played was a recording made two days beforehand because of concerns over the cold weather damaging the instruments.
Montero has a long-established duo partnership with the French cellist Gautier Capuçon and they appeared at the 2009 Salzburg Festival and toured Germany in 2009 including engagements in Munich, Bonn, Hamburg, Dortmund and Heidelberg in April 2009 as well as the Théâtre du Châtelet, Paris, in May 2009. Future duo engagements in 2010 include the Vienna Konzerthaus, Braunschweig Festival, Beethoven Bonn Festival and Opéra de Lille.