Related Clues:
- Submission tape
- Nameless devil in short protest
- Changed mode of protest
- Public protest meeting
- Musical pitch?
- Test vehicle, informally
- Software giveaway
- Co-ordinate publicity material linked to a film, say
- Infomercial component
- Expo display
- Show the features of
- Car salesman's ride, often
- Protest brings some pandemonium
- Big march
- Joint promotion for most of those from 6 down is fashionable