It's time to say goodbye to the greatest heavy metal band of all time. Yes, Black Sabbath -- the amazing English rock act that got its start in 1968 -- finally is embarking on its farewell tour, which we are thankful includes stops in both San Jose and Oakland. The Rock and Roll Hall of Fame act was brilliant during its previous Bay Area outing in 2013, hammering the crowd at the Shoreline Amphitheatre in Mountain View with some of the mightiest metal imaginable. Details: 7:30 p.m. Feb. 9; SAP Center, San Jose; 7:30 p.m. Sept. 15; Oracle Arena, Oakland; $45-$150; www.ticketmaster.com.
Of course, Adele, whose album "25" is one of the biggest stories in pop music, has three summer shows slated for the Bay Area -- July 30-31 at SAP Center in San Jose and Aug. 2 at Oracle Arena in Oakland, but all three are sold out.
ALSO ON OUR RADAR
Cowboy Junkies: Margo Timmins is blessed with one of the best voices in the business, one so gloriously effective that it keeps drawing us to Junkies shows decade after decade. Details: 8 p.m. Jan. 21, 9 p.m. Jan. 22, Great American Music Hall, San Francisco; $40; www.slimspresents.com.
Rihanna: The multiplatinum R&B-pop star is a powerfully charismatic entertainer with a load of top hits at her fingertips. Make sure to arrive on time to see opening act Travis Scott, one of hip-hop's top new artists. Details: 7:30 p.m. Feb. 28; SAP Center, San Jose; 7:30 p.m. May 7; Oracle Arena, Oakland; $30.50-$151; www.ticketmaster.com.
The Cure: It's hard to believe, but this incredible alt-rock act will be celebrating its 40th anniversary in 2016. Seems like only yesterday that we were singing along to "Boys Don't Cry." Details: 7 p.m. May 26; Shoreline Amphitheatre, Mountain View; $25-$100; www.livenation.com.
Dixie Chicks: The Grammy Award-winning trio, which ranks among the top-selling country music acts of all time, sounded stellar at Neil Young's Bridge School Benefit concerts in October. Details: 7 p.m. July 12; Shoreline Amphitheatre, Mountain View; $42-$136; www.livenation.com.
Janet Jackson: Having wowed fans with two sold-out shows at the Bill Graham Civic Auditorium in San Francisco in October, the phenomenally talented singer brings her hit-filled Unbreakable World Tour back to the Bay Area. Details: 8 p.m. May 19; Concord Pavilion; $35.95-$209.95; www.livenation.com.