Here is a review from a concert in Royal Festival Hall on the 27th of february:

Never stop being curious … or the music of Swedish composer Karin Rehnqvist might pass you by. She was the latest subject of the Philharmonia Orchestra’s Music of Today series – free and informal, just turn up.

Finally, Quem chama? Who’s that calling? This 13-minute “happening” for two voices, one and a pair of trumpets placed behind the platform, the other and two trombones at the rear of the audience. The vocalists offer Swedish herding cries, primeval in effect. On the platform the sinewy writing exploits low registers. It’s a physical and naturalistic piece – Canteloube meets Xenakis, to quote an irresistible comment shared with me afterwards, and with an apotheosis that, strangely, recalled the close of Mahler’s ‘Resurrection’ Symphony. The two singers carried to all corners (with no need of amplification) and Peter Tilling had the measure of perspectives and directions.