Maybe it's a blessing that Glastonbury's taken a year off. There isn't an artist alive, from Sabrina Carpenter to Fontaines DC, good enough to justify getting heatstroke in a field this weekend. But the festival's fallow year has left a gaping hole in the summer music calendar. The BBC's filling the gap on iPlayer by resurrecting classic sets from its archive - from Radiohead in 1997 to Olivia Rodrigo last year . But there's another alternative for anyone craving a live music fix, and it's