For all you musicians out in Los Angeles, and the San Fernando Valley especially:
 
There's a fun jam session I'm in the house band for every Wednesday night, 9-12, at Monty's Woodland Hills, on Topanga just south of Ventura Blvd. Hosted by Ronnie Gutierrez and Viva Vinson, the house band will do a 45 minute set and then we open it up for people to sit in! Always lots of great talent coming through, music ranges from classic rock to Latin to R&B to Jazz. No cover, bring your instruments!
 
 
Monty's Pro Jam

I'll come dressed in a red drag and sing Red Dress by sugababes in my loud yodeling - trying - to - opera voice for the entire duration of the jam. Maybe I'll also bring some bagpipes and try to learn them for the very first time. Well that would be great, except I dont have any bagpipes :(

The event sounds interesting to attend. Unfortunately i will not be able to attend. 

Anyone go?  How was it!

Well I actually couldnt go because I dont live anywhere near, and I dont yet own a red dress or a pink tutu, even though Ive forever dreamed of having them.

We have many of these *jams* throught pdx.  Mostly pentatonic scales up and down, up and down.  Every now and then chromaticism with an occasional detour into the whole tone scale (you know, the black keys).  Don't hear much else, why bother?!OMG I am SO sure!.

I'm sure the black key use was only accidental. 

right-o

This one time I tried an actual jam, I wondered why anybody does them. They just turn into random noise.

If it's a proper setlist of songs, it can be a lot of fun for the band and the audience.
If it's just "let's riff on a 12-bar blues in G," it's usually painful for anyone not on the stage.