Rara.com is opening up its subscription service to provide free music streaming trials and celebrity playlists as it looks to bolster its service to compete with rivals including Spotify and Deezer. The British music streaming service, which launched in December 2011, has brought in artist Ellie Goulding and celebrity trainer Tracy Anderson to share exclusive playlists and music tips for 2013 on rara.com and will make its service free to listeners for the next seven days.