According to the BBC Radio Wales website the special Children in Need fundraising concert will be available online live from 6pm on Sunday 19 November.
For those who miss it the concert will be available for 7 days via the BBC Radio Player.
The site also reveals that the whole concert will be available by the BBCi red button over Christmas as well its inclusion in the previously announced special Doctor Who Confidential programme.
Among the tracks being performed by the BBC National Orchestra and BBC National Chorus of Wales are Rose’s Theme, The Doctor’s Arrival, The Songs of Doctor Who, Song For Ten and Doomsday featuring Melanie Pappenheim.
For more details including a full list of tracks visit bbc.co.uk/radiowales