“Seeing you perform inspired me sooo much,” Rosalía tweeted.
Eilish, who performed in Spain for the first time, had previously told the BBC’s Annie Mac about her studio collaboration with the 25-year-old Catalan singer, describing Rosalía as someone “who actually knows what she wants.” She added that during the session she “sang some notes I had never even thought about.”
Eilish will tour the United States and Canada in May and June, part of a world tour that includes a return performance in Barcelona on Sept. 2.
Rosalía is set to appear at Coachella and Barcelona’s Primavera Sound, among other upcoming dates.
Can’t wait to finish our song — compartir contigo en el estudio o verte ayer actuar me inspira sooo much, love you B pic.twitter.com/TxV3J7D1QQ
— R O S A L Í A (@rosaliavt) March 10, 2019