Complex sentence: JMT Records (an acronym of Jazz Music Today) was a German record label, based in Munich and founded by producer Stefan F. Winter, that specialised in contemporary jazz and operated from 1985 until 1995.
Split into simpler sentences: JMT Records (an acronym of Jazz Music Today) was a German record label founded by Stefan Winter. It was based in Munich, Germany, specialized in contemporary jazz, and operated from 1985 until 1995.