The cellos are coming! This summer’s BBC Proms, announced yesterday, will feature no fewer than ten cello concertos, as well as a chamber music concert for multiple cellos. An article about the cello invasion in the new Proms booklet is headlined “No more second fiddle”, which is slightly bizarre — but we know what it means. Alisa Weilerstein certainly does. “Whenever I tell people I play the cello, they always say. ‘Oh, it’s my favourite instrument’,” she says. “Yet most orchestras will programme a maximum of two cello concertos a year — far fewer than violin concertos. And piano concertos are more