Linda Ronstadt, Jackson Browne. After doing opening acts for a lot of unappreciative audiences, Linda Ronstadt is finally getting the attention she deserves. He start with a group called the Stone Poneys was less than over-whelming, but Ronstadt has developed into one of the finest, most energetic country singers around. Jackson Browne writes pleasant songs. Other people sing them better. Friday, March 1, at the Orpheum Theater, $4-$6.

Dave Mason. Traffic and Delaney & Bonnie are the two best-known groups to which Dave Mason has lent his guitar-playing talents. He takes center stage himself Saturday, March 2, at the Orpheum Theater, $4-$6.

John Lincoln Wright and the Sour Mash Boys. I have never heard John Lincoln Wright and the Sour Mash Boys, an electric country band which in various forms frequented Cambridge night spots for years. But another Crimson reviewer with respectable credentials claims that they are not to be missed, especially since you can hear them cheaply and conveniently. Their next local appearance is Thursday, February 28, at King's on Boylston St.

Alan and Zeb Feldman. Peter Johnson's concert series this week features "traditional music from Appalachia, Ireland, Brittany, Turkey and the Balkans." Harvard should have as good an Affirmative Action plan. Saturday, March 2, at St. Paul's School, Mt. Auburn St., 8 p.m., $2, free refreshments and party afterwards.

Music Notes. The Performance Center features blues group Tracy Nelson and Mother Earth in concert with up-and-coming English rockers 10 cc through Saturday, March 2, 8 and 10:30 p.m.... Seals and Crofts, a harmonious blend of Baha'i spirituality and AM jive, will play Tuesday, March 5, at Boston Music Hall, 7 and 10:30 p.m., $4.50-$6.50.