Since its launch last year Chill's formula of continuous chill out music has not featured presenters or ads, so the new 7pm-8pm weekday show is a is a first for the station.
'The O2 Chillout Room' show allows one listener to choose the entire hour's play list and present it by recording links. Other listeners can get the track listing sent to their mobiles by texting in to the station.
The partnership with O2, worth a five-figure sum, will run for six months and there are plans for it to evolve to include online, in-store and event activity.
Bern Leckie, programme manager for Chill, said: "O2 have helped by making it easier to get in touch, swap ideas and find out what other Chill listeners are into. Listeners are already loving taking part, so it's an ideal fit for us."
Chill launched on several DAB regional multiplexes in England last year and on Sky this January. It has 115,000 listeners according to its first Rajar figure, posted in the second quarter of this year.
Paul Samuels, O2's head of sponsorship and interactive partnerships, said: "We've always been strong supports of radio as a medium but have always wanted to take our activity to the next level. The fit between Chill and O2 is fantastic and with the creation of 'The O2 Chillout Room' we're giving listeners the chance to live our brand proposition."
The deal was conceived and brokered by David Roberts of PHD sponsorship agency Drum and GCap's head of sponsorship, promotions and interactive Anna Pennington, along with sponsorship executive Jo Miller and commercial programming group head Andy Wood.
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