This album contains three works by Seamus Cater, including his creative response to the work of Alexander John Ellis (1814-1890), who presented a paper 'The History of Musical Pitch' to the Royal Society in 1880. Ellis was a mathematician, collector, philologist and musical enthusiast, who spent a lot of time measuring the exact frequencies of contemporary and ancient musical instruments, and so is remembered as one of the founders of comparative musicology. Two of the pieces on the disc are 're-soundings' of Ellis's research, and a tribute to his enthusiasm for alternative tuning systems (he performed at the Royal Society with his own concertinas that used experimental tuning systems).