With performers Arca, Los Thuthanaka and YHWH Nailgun, New York’s C2C proved the thrills – and limits – of staying independent amid a festival boom With performers Arca, Los Thuthanaka and YHWH Nailgun, New York’s C2C proved the thrills – and limits – of staying independent amid a festival boom G rowling, flailing, kicking, screaming, the experimental British musician Aya clutched a microphone and ranted about her hormones. “If anything, the progesterone is doing wonders right now,” she cackled