Plants serenaded at Barcelona’s Liceu opera houseYour browser does not support the video elementThe first concert after lockdown at the Liceu opera house on Barcelona's iconic Rambla boulevard was held before a full audience - of plants! / ACNshareACNFirst published: June 23, 2020 02:01 PMFOLLOW CATALAN NEWS ON WHATSAPP!Get the day's biggest stories right to your phone