imeem (Android) Now part of myspace, imeem is the ultimate streaming music client for your Android phone. Just like Pandora or Last.FM, imeem transforms your smartphone into a personal jukebox, where you can listen to and save favorite artist-stations and make custom playlists.
The music recommendations engine is accurate, and the sound quality is good with 3G or Wi-Fi connections. Even better, you can download some tracks to your phone. It’s easy to skip over songs in the stream that you don’t like, though you can skip no more than six tracks in an hour in the featured streams.
TuneWiki is a worthwhile alternative to the music player that comes with Android phones. Like other apps, TuneWiki streams music and video to your mobile device, and plays the music you’ve stored on your memory card; it can also stream songs (and YouTube videos).
However, its social networking features are what make TuneWiki special. The app shows you the lyrics of the song playing. It allows you to get social with mapped charts of music played around the globe. And, if you're vocal about your music, the Shoutwall lets you post and read comments on the songs you are currently playing.
Pandora Radio (iPhone)
Pandora’s mobile app shines on the iPhone with a full-featured experience to match the Web service. Accompanied by full album art, artist bios, and a horizontal view of recently played songs (CoverFlow), Pandora also features a huge catalog of music for you to discover.
Pandora uses an extensive online database of expert music analysis, and helps you discover music based on your favorite songs and artists via hundreds of musical attributes. If you already have a Pandora account, you can jump right in and listen to stations you’ve already created at home or work, or start building new playlists on your phone.
Dedicated to fans of new music, OurStage doesn't feature the plentiful back catalogs of Pandora or Last.FM, but it does a good job of showcasing new music from independent and major labels, and from unsigned bands as well.
The app offers you several genres to pick and mix from, and feeds new music, which you rate with a thumbs-up/thumbs-down mechanism. The app then records your preferences and starts recommending music. Your favorites are also saved in a playlist. OurStage is free of charge and free of advertising, and it gives away up to $5000 a month to the indie artists with the highest user ratings.