T-Mobile has launched its new dual download Mobile Jukebox service.

The service offers instant mobile access to over 500,000 music tracks, all priced at £1.

The tracks are available to download onto a range of more than 30 handsets, both 2.5G and 3G, on pay-as-you-go or contract.

Music is provided by four major record labels (Universal Music Group, Sony BMG, EMI Music and Warner Music International) as well as independents such as V2 and Beggars Banquet, the new service offers access to every chart track.

There's a range of 32 phones that support the service, starting from free with a contract to £50 for a pre-pay model with 19 of them are pay-as-you-go phones.

What is interesting is that the T-Mobile Mobile Jukebox tracks are "dual download", so you get two versions of each music file for the £1 fee.

T-Mobile sends one version, compressed for a fast download, to the mobile phone (AAC format).

It sends the other to your PC (WMA format), to store, burn to a CD or swap onto an MP3 player.

T-Mobile stores all of your downloads to "My Music" at www.music.t-zones.co.uk, so even if you lose your handset, you never lose your downloads.

Throughout July, T-Mobile is offering every new customer with a Mobile Jukebox handset any five tracks for free.