This nominated idea is to create a satellite symphony for the iPhone
An idea to allow people to create their own "satellite symphony" through an iPhone app has been shortlisted for a new music prize.
Another entry is based on the rotation of stars around the celestial North Pole to make new "stellar" sounds.
The winner of the £50,000 prize offered by the PRS for Music Foundation (PRSF)will be announced on 16 September at the Serpentine Gallery in London.
The winning idea will then be developed and make its debut next year.
The PRSF is the UK's largest independent funder of new music across all genres and has its roots in PRS for Music (formerly the Performing Right Society).
The biennial new music prize began in 2005.
Other shortlisted concepts include recycling existing sounds - music will be collected and filtered by a portable structure resembling a fairground organ.
Another design aims to create automatic musical instruments which can be played by audience members.
Beatboxing could be used to bring African Yoruban culture to the UK
The final entry is an idea to use beatboxing - a form of vocal percussion - to approximate African instruments.
"This year's shortlist is arguably the boldest and most exciting yet," said chair of the PRSF, Sally Taylor.
"Just as the Turner Prize makes people talk about art, we hope that this year's New Music Award will stimulate debate,"
Chief arts editor for the Guardian newspaper, Charlotte Higgins, is chairing the judging panel, which includes artist Martin Creed, composer and pianist Michael Finnissy, pianist and conductor Joanna MacGregor and music journalist Paul Morley.
The public will be able to watch films about the five shortlisted entries and vote for their favourite on the PRS website from 18 June.
The public vote will count as one more voice and vote on the panel.
Previous winners include former Pogue Jem Finer in 2005 for Score for a Hole in the Ground.