context: The first electronic music works were performed in the 1940s and 1950s, and from the late 1960s the electronic world of sound became a part of popular music. In the 1990s, as computers, their peripherals, and software evolved and waned, anyone could easily make their own music on their own computer. Until the 1980s, electronic music was mainly produced using devices made specifically for this purpose. Today, a significant part of all popular music is electronic music, and is no longer typically referred to as "electronic music".
question: When was the first piece of electronic music made?
answers.text: 1940s and 1950s