Various Artists - Perfect Day

Funnily enough, this still stands the test of time.

from Wikipedia:

The BBC commissioned a rendition of Lou Reed's "Perfect Day", and in 1997 the track was showcased in a lengthy corporate promotion of its diverse music coverage which was broadcast on BBC channels and in cinemas. It featured Lou Reed himself and other major artists in what the Financial Times described as "an astonishing line-up of world class performers".

In response to accusations from commercial competitors that the corporation had wasted vast sums on the film it was revealed that each artist received a "token" £250 because of their belief in the BBC.

Prompted by a huge public demand the track was released in November as a charity single for Children in Need. It was the UK's number one single for three weeks, in two separate spells. Selling over a million copies, the record contributed £2,125,000 to the charity's highest fundraising total in six years.