There are at least four bands called litmus. One is based in the UK - this Litmus is a space rock band playing in the vein of early psychedelic rock bands such as Hawkwind, Pink Floyd, and Gong but also with more modern influence coming from the likes of Monster Magnet and Electric Wizard. Their latest album, Aurora, is out now on Rise Above Records. Another one is in Korea. Another one is based in Berlin, and makes lofi indie electronica.