Ten Years After--The Rise of a New Generation : * * * * <i> Great Balls of Fire</i> * * * <i> Good Vibrations</i> * * <i> Maybe Baby</i> * <i> Running on Empty : </i>

Can this really be the Circle Jerks’ sixth album? Have the Droogs actually been at it for 15 years?

As independent recording activity on the L.A. rock scene approaches its second decade, we’re starting to get cross-breeding not just of styles, but of generations--a phenomenon evident in the city’s latest crop of records.

When local bands starting releasing their own records back in the late-’70s dawn of the grass-roots scene, all the bands were new. Now, the old guard--the Jerks, Droogs, Fibonaccis--are assuming the role of veterans, and while they benefit from the well-established followings that come with that status, they also face the veterans’ struggle to keep things fresh.

Bands like Blood on the Saddle, Divine Horsemen and Leaving Trains are a step younger and in the prime of life. On their new LPs, they exhibit a bracing sense of consolidating their strengths and coming into their own.

And a whole new generation is popping up--both entirely new entries like To Damascus and Waldo the Dog Faced Boy, and fresh formats for familiar faces (Opal).

The albums and EPs issued in the past couple of months reflect the diversity that results of this blend. If one sound seems to be making a move, it’s the inventive neo-psychedelia of Opal, To Damascus and Waldo.

Here’s a look at the latest L.A. sounds.

Dylan Cameo

TRASH MATINEE. “Trash Matinee.” Underworld. This young L.A. quartet is fronted by brothers Danny and Phillip Sidlow, but the name people are more likely to notice is Jakob Dylan. The son of Bob makes his recording debut with a cameo appearance on this mini-album, as co-writer of the Who-like “Just a Boy” and guitarist on the pounding rocker “What Do I know.” It would be a pretty good record anyway: high-tech folk-rock, baroque power-pop, a distinctive tone in some of the vocals and a dose of youthful verve. * * *