Cheap tickets to House of Blues shows

Looking for something to do in the weeks ahead? The House of Blues is offering general admission tickets at a great price to several shows. 

For $6, you get one ticket to see Frontiers – The Journey Tribute on Friday, September 30, at 8 p.m. (a $13 value).
For $8, you get one ticket to see The Mega 80's on Friday, October 7, at 8 p.m. (a $16 value).
For $23, you get one ticket to see John Hiatt with Lilly Hiatt on Wednesday, September 21, at 7 p.m. (a $47 value).

*If you haven't signed up for Groupon yet, I'd appreciate it if you used my reference link. It helps me out :-) Thanks!