OK, David Crosby can't make it to the Thursday, Jan. 10, Southern Utah University convocation because he's still recuperating from a motorcycle accident - who can replace him?

How about his partner and fellow rock legend Stephen Stills?That was the gist of a recent telephone conversation between SUU Lectures director Lana Johnson and Crosby and Stills' agent. Crosby was scheduled for the convocation lecture but was injured, and though expected to fully recover, will not be available on Jan. 10.

Stills, Crosby's partner in the legendary rock group Crosby, Stills, Nash and Young, will speak at the Convocation on "Political Activism and the Arts." His own political activism ranges from opposition to the war in Vietnam to the problems of the homeless and hungry.

Stills first gained fame as a member of Buffalo Springfield in the 1960s. In 1969, he broke new ground when he teamed up with Crosby, formerly of the Byrds, and Graham Nash of the Hollies to form Crosby, Stills and Nash.They were featured at the Woodstock Festival in 1969 and were already producing gold albums when Neil Young, another Buffalo Springfield member, joined the group, which became Crosby, Stills, Nash and Young.

Stills regularly campaigns for candidates around the nation who share his views and is actively involved in helping develop the arts in Eastern Europe. He is one of the most sought after speakers on the emerging arts scene in the Soviet bloc nations, and his future plans include a 1991 international tour with Crosby and Nash.

"We were sorry to hear about David Crosby's accident, but at the same time quite pleased to have Stephen Stills as a speaker," Johnson said. "And if something happens to him - well, there's still Neil Young and Graham Nash."