The Festival at Sandpoint continues into its second weekend with another impressive trio of musical acts, including two of modern rock’s most exciting new artists and a seasoned veteran with a deep catalogue of classic hits. • The John Butler Trio, with Eclectic Approach, Thursday, 7:30 p.m. John Butler is a huge star in his native Australia, and although his name isn’t as instantly recognized here, he has gained a fervent following in the States after several international tours with the Dave Matthews Band. Pulling from country, folk, rock and reggae influences, Butler released three consecutive No. 1 albums in his homeland, as well as several live recordings, and has also won a number of Australian music awards. Seattle pop-rock band Eclectic Approach will open the show. $44.95.