Rodolfus Choir & Alex Stobbs on Channel 4 and More4 on Thursday 8 October at 9pm and 10pm.

In April 2009 the Rodolfus Choir performed to a full house at London's Cadogan Hall in a very special project: a performance of Bach's St Matthew Passion conducted by Alex Stobbs (featured in the 2008 documentary A Boy Called Alex). Walker George Films made a documentary, Alex: A Passion for Life (watch online here), following Alex in the run-up to this fantastic performance, and the effect of his cystic fibrosis on his day-to-day life over this period, which will be shown on Channel 4 on Thursday 8 October at 9pm.

The documentary is followed immediately at 10pm by an hour of musical highlights from the concert on More4 (available via freeview) in A Boy Called Alex: The Concert (watch online here). This provides a fantastic opportunity for those who missed the concert to share the choir's acclaimed performance, and an equally exciting chance for those who were there to re-live the electric atmosphere of this unique event.

For more clips, visit the documentary filmmaker's website.