Mission: Impossible composer Lalo Schifrin says he’s given up scoring movies (maybe!) but, at 84, he is still writing potent music for the classical world. His new guitar concerto, his second for renowned soloist Angel Romero, will debut Tuesday night at the Hollywood Bowl (with Gustavo Dudamel conducting the Los Angeles Philharmonic). In this piece for the Los Angeles Times, I interviewed the five-time Grammy winner about his concerto, about writing for films vs. the concert hall, and about the enduring legacy of a 1966 TV theme that remains his most famous work. (I also talked to Romero, who laughed and said Schifrin’s guitar writing was “diabolical” — as in difficult.)