You never have to bother about booking tickets for city's concerts. Don't spend money. Just subscribe to Roadie's RSS feed and relax at your home by listening to all the music you enjoy.
This is a free web service that creates a unique RSS feed from concert schedules and album releases of bands and artists straight to your RSS reader.
Here is the URL for Roadie's RSS feed: http://roadie.thinkorange.pt/
I just added Olivia Newton John's music album. I have been her ardent fan since the 1980s. Her song titled, "Recovery" is one of her best in my opinion.