Concertgoers who purchase tickets via AXS, a subsidiary of AEG, might end up getting free streaming music. In a new partnership, tickets purchased via AXS will also get users a free 30-day trial of Rdio. The month-long free subscription is for unlimited streaming, but comes with an added bonus. Depending on your ticket purchase history, Rdio may be able to customize your new profile with music you’re into. If an artist you’ve seen live adds music to Rdio, you’d even get notified.