Long-duration performances have been an interest of mine, since finding Morton Feldman's score for String Quartet No 2. Like, I believe, many readers of TEMPO, I enjoy the feeling of immersion in pieces such as Catherine Lamb's Prisma Interius IX, discussed in issue 289 of this publication, or James Week's Windfell, reviewed in issue 291. These works, as pleasurable as they are to listen to, also ask for particular endurance and concentration on the part of the performer.