After a successful launch in the US in October, Amazon has also launched its on-demand music streaming service in the UK.

It's called Amazon Music Unlimited, and it takes on Spotify and Apple Music and other similar streaming services. Here's everything you need to know about it, including how much it costs, where it's available, whether it's ad-free, how it works, and more.

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There are two different types of music streaming services: internet radio-like ones that randomly play music for you based on your preferences (example: Pandora in the US), and on-demand ones that let you find and play specific tunes (examples: Spotify and Apple Music). Amazon Music Unlimited is the latter type, but it comes with a number of different things, including a low-cost price, that make it stand out from rivals.

It is available to everyone, but there is a price incentive for customers who already subscribe to Amazon Prime.

Amazon Music Unlimited is available to Amazon Prime members for £79 per year in the UK, $79 per year in the US. Alternatively you can pay monthly at a cost of £7.99 per month ($7.99 in the States).

That's cheaper than the £9.99 ($9.99) per month fees both Apple Music and Spotify charge for their similar services. However, if you don't have an Amazon Prime subscription, it costs the same - £9.99 a month.

An Amazon Prime subscription costs £79 a year ($99 in the US) but gives you free next-day delivery on millions of items (even same-day on many, depending on your location). You also get access to Amazon Prime Instant Video, Kindle Owners Lending Library and many other incentives.

If you own an Amazon Echo device, you can get the service for just £3.99 ($3.99) per month to play on a specified, single Echo or Echo Dot - with or without a Prime membership. Amazon currently offers three different Amazon Echo models (you can read about there differences via Pocket-lint's comparison guide).

Amazon Music Unlimited also offers a family plan to users. It lets as many as six people listen to tunes for $14.99 a month if you're not a Prime subscriber. That's the same price as Apple Music's family plan option. Prime members can enjoy the annual Family Plan for $149 a year, which is a two-month discount.

Go to the Amazon Music Unlimited website here (for the UK) or here (for the US).

You can first sign up for a 30-day free trial regardless of whether you are a Prime member or now.

You will have to sign up using your Amazon login credentials and authorise Amazon to charge your default card or another card on file after your trial ends. Your subscription renews monthly, but you can cancel the renewal at any time by visiting your Amazon Music settings here (for the UK) or here (for the US)Settings. If you use Echo, simply ask Alexa on your chosen Echo device to start your trial to Amazon Music Unlimited.

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Amazon Music Unlimited is available in the UK, US, Germany and Austria.

Amazon Music Unlimited is accessible through the Amazon Music app for Fire devices, iOS devices, and Android devices, as well as Mac and PC. You can also access it through a web player in your browser and through the company's Echo devices. You can play music through a Sonos Multi-Room system or Roku media streamer, as well. Amazon said select BMW, Ford, and Mini cars are even Amazon Music-enabled.

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Ad-free listening

Amazon Music Unlimited is similar to Apple Music and Spotify in that it offers "tens of millions" of songs you can listen to on-demand, ad-free. It also serves up recommendations engine through algorithms and hand-picked playlists, and you can access it via mobile apps and the web. Amazon even redesigned its existing Amazon Music app with support the streaming service and an all-new user interface that focuses on album art.

Ask Alexa

Amazon is pushing the service's integration with Echo and the Alexa voice assistant. Not only do Echo owners have access to a cheaper version of the service (available on one Echo device at a time), they can request songs using just their voices. They can stream a specific song, artist, album, or playlist, and Alexa can even pull up the "latest song" from an artist or play music based on mood, time, activity, etc.

Alexa can also find songs from snippets of lyrics. Although the discounted Echo plan is limited to only one device (you cannot use it on your phone, PC, tablet, or even more than one Echo device), it offers all the same features, including the full music catalogue and recommendations. If Echo owners don't get Music Unlimited, Amazon's existing Prime Music service will still be available to them with a library of two million songs.

Side-by-Side

Amazon Music Unlimited is offering a unique feature called Side-by-Side. It syncs artists' commentary with racks from the their catalogues. This is how Amazon describes the feature:

Amazon Music on Alexa also brings fans and artists closer together with behind-the-scenes artist commentary about their music, called Side-by-Sides. Customers can simply ask, “Alexa, play Side-by-Side with OneRepublic” and Ryan Tedder will play and comment on songs from OneRepublic’s latest album Oh My My. Side-by-Sides are available exclusively on Amazon Music from top artists such as The Chainsmokers, Jason Aldean, Lindsey Stirling, Norah Jones, OneRepublic and Kongos – with more being added all the time.

Check out Amazon's promo video above, or visit Pocket-lint's Amazon hub for more related news.