I was so happy when I purchased this second OST, which seems like it is geared more for Ghost in the Shell: Stand Alone Complex 2nd Gig than the first season. Fans of Yoko Kanno will NOT be disappointed as this soundtrack features the composer doing the things she does best, making cool grooves.
That said, you won't hear any unique branching out of styles as you have probably become accustomed in her other works. This OST seems very derivative of work you have already heard from Yoko Kanno, although that isn't necessarily a bad thing for those of us who love her music. On this OST you can expect to hear songs that sound like a mix of what you heard in the first GITS: SAC OST, as well as a few of the Cowboy Bebop OSTs (cuts 3,4, and 6 in particular). Track 11, "What's it For?" and track 13, "Pet Food" even bear a resemblance to music from the Wolf's Rain OST 1.
Also, if you play this CD on your computer, don't be surprised when you realize that several of the track titles come up written in Japanese. Also, all of the performers are listed as Yoko Kanno (despite the vocals being done by others) and her name is always written in Japanese. This isn't a biggie, though, since all the titles and names are written in English in the liner book.
Overall, I'm glad I bought this, and I will probably enjoy it until GITS: SAC 2nd Gig is shown on Adult Swim starting in November.