Across
- 4. record material
- 5. kind of microphone
- 7. Am and Fm
- 9. spoke Mary Had a Little Lamb on his device
- 11. part of a microphone
- 13. a company that made music players
Down
- 1. shape of early records
- 2. a Thomas Edison invention to play music
- 3. kind of microphone
- 6. noise
- 8. patented the first electric loudspeaker
- 10. Sony's creation
- 12. a compilation of songs recorded on cassette