There are at least five 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. Another one is based in France, and makes dark wave / soulful electronica. Another one is based in Manchester, and is a string quartet. The self-titled album, 'Litmus', is their 2003 release.