The idea seems really nice :) Obviously this is just a Beta so I understand the simple task! Anyway I would love to see:
-a shop where you can buy items to your bands
-the possibility of different contracts for a concert and also for an album (if songs are going to be taken into account)
-a "Band member market", where you can hire different member for your band that has different skills
-Adding groupies could make the game funnier
-Popularity tab
Anyway the idea of your game is really enjoyable :)
The idea seems really funny and for a lover of Tycoon games like me it would be easily playable. Just a suggestion: I would improve the shop, there are few upgrades, maybe if the airport could be made bigger by upgrades the game would be funnier :)
 "Band Tycoon BETA"){kind=icon}
 "Frenzy Airport"){kind=icon}
 "Coinbox Hero"){kind=icon}