With major buzz surrounding the June 12 box-office opening of Jurassic World, the dinosaur-driven film franchise’s classic theme song roars to new heights. John Williams’ “Jurassic Park Theme,” released in 1993 to accompany the franchise’s first film, has become a top 10 hit on a Billboard chart at last, rising 13-9 on the June 13 Classical Digital Songs survey. On the June 20 tally, it takes an even bigger bite out of the chart, leaping to No. 6 with a 15 percent gain to 1,000 sold in the tracking week, according to Nielsen Music. The melodic instrumental has sold 185,000 downloads to date.