Rock at Knoch will take place from 5 to 10:30 p.m. Friday at Knoch High School. Each band of nine bands will play for about 25 minutes. The bands are: Fight the Flow, About a Mile, Clockwork Society, Successful Failure, Ozone Itch, The Calamity, Something from Nothing, End of Transmission and Core. Voting in the battle of the bands will take place via ticket boxes. Fans can purchase tickets for $1 and place the tickets in the band box of their choice. Event admission will be $5 and will be open to all ages. Refreshments will be available.

<B>Idina Menzel</B> of "Wicked" fame will perform in support of her album "I Stand" at 7:30 p.m. Wednesday at the Byham Theater, 101 Sixth St. Tickets range from $27 to $41 and available at the Box Office at Theater Square, 655 Penn Ave.; online at www.pgharts.org or by calling 412-456-6666.<B>David Byrne</B>, co-founder of the band Talking Heads, will perform "David Byrne: Songs of David Byrne and Brian Eno" at 8 p.m. Friday at the Carnegie Music Hall in Oakland. Tickets are available by calling 412-322-1919, or visiting the Web site, www.ticketmaster.com.