The May issue of frieze magazine is dedicated to the 61^st Venice Biennale. Evan Moffitt profiles artist Lydia Ourahmane ahead of her solo at the Nicoletta Fiorucci Foundation. Plus, a roundtable on performance at the Biennale brings together Florentina Holzinger (Austria), Miet Warlop (Belgium), Dries Verhoeven (Netherlands) and Ei Arakawa-Nash (Japan).