Original sentence: Considered Kline's most popular work to date, performances began in the New York City neighborhood of Greenwich Village and has since spread to other cities around the world, including in the United States, Canada, Europe, Oceania, Africa, and Asia.In 2011, Kline released the Unsilent Night mobile application for Apple and Android devices due to the dwindling availability and popularity of boomboxes and cassette players in general, allowing participants to use their smartphones and MP3 players to present the music instead
Edited sentence: Anyone may participate in this volunteer-driven event; with the release of the Unsilent Night mobile application in 2011, participants only need a smartphone or MP3 player and a mobile loudspeaker to join the annual tradition.Every year since then, participants have been able to use their smartphones and MP3 players to present the music instead.If using a mobile device, participants are encouraged to also bring a mobile loudspeaker to amplify the sound from their devices while walking in this parade.In 2011, Kline released the Unsilent Night mobile application for Apple and Android devices due to the dwindling availability and popularity of boomboxes and cassette players in general.Widely considered Kline's most popular work to date, this celebration of the holiday season began in the New York City neighborhood of Greenwich Village and has since spread to over 116 cities around the world (mostly in the United States and Canada, but also to major cities across Europe, Oceania, Africa, and Asia)