Once in a while Jumpstart Jr. talents combine forces to organise a special concert. 

In September 2009 Bojan Cicic, Sophie Gent and Catherine Jones played as soloists with the Orchestra of the 18th Century conducted by Frans Brüggen. This concert was part of the Festival Oude Muziek Utrecht.

A Jumpstart string quartet was formed for the MAFestival in Brugge. Cecilia Bernardini, Zefira Valova, Dmitry Sinkovsky and Steuart Pincombe played a wonderful Beethoven programme.