UPDATE: After a few days of testing, it seems to me that do713 comes closest to generating a consolidated list of events that I might want to attend. So a tip of the hat to the folks at do713.
Trying to find something interesting to do in Houston tonight? 
Try these arts calendars. Yes a million different people have tried to make consolidated arts calendars, but until someone figures out how to herd cats get arts people to be more organized, you just gotta hit them individually.
For profit maintained calendars:
- Houston Chronicle Entertainment Section
- Houston Press Calendar
- Facebook – your events (shows ones you said “no” to as well)
- Houston Public Radio Arts Calendar
- Meetup Events Calendar for Houston
Arts Organizations Calendars
- Spacetaker arts calendar
- DiverseWorks calendar – downtown area
- ArtsHound events calendar
- Fresh Arts Coalition – then click “calendar”
- Discovery Green Events Calendar
Blogs and stuff
- Glasstire Arts Calendar
- Caroline Collective Events
- Chron Entertainment Blog
- “Tonight in Houston” search on twitter (today)
- Houstonist Blog
- do713 blog on events in Houston
- Culture Map Blog
- Only in Houston Events Calendar
- Art League of Houston
Not so big venues that we like
Museums
- Menil Collection Events
- Houston Museum of Fine Arts Programs
- Contemporary Arts Museum
- Houston Museum of Natural Science Events
- Rothko Chapel Calendar
- Lawndale Art Center
Photography
Big venues
- House of Blues Houston
- Reliant Park Calendar
- Wortham Center
- Miller Outdoor Theater
- Cynthia Woods Pavilion
- Verizon Theater
- Blaffer Gallery at U of H
- Orange Show Center for Visionary Arts
- Alley Theater
…. DRAFT … let me know what I missed, or misclassified, or where you look for events to do in Houston related to arts and music and I’ll try to get it added.