"Development of 20th & 21st Century Technologies": HTML5 Crossword

Across

2. a transducer used on electric guitars (6)
4. playback device with limited frequency range (10)
8. early format for storing recorded information (3,8)
10. early flat disc format (6)
11. Musical Instrument Digital Interface (4)
12. tape was held on a reel which passed through the recording/playback head and wound onto a second reel (4,2,4)
14. a device which allows audio capture / playback with a computer (5,9)
15. software developed for performing which lets users record and edit without stopping playback (11,8)
17. low pitched four string instrument (4,6)
19. LP on a record stands for (4,6)
20. the first device to communicate to mass audiences (5)

Down

1. coin-operated public audio device, most popular between the 1940s and the 1960s (7)
3. analogue format - polyvinyl chloride plastic (5)
5. mechanical device which read a roll of perforated paper (6,5)
6. often used with distortion in Rock & Punk music (8,6)
7. similar to the reel-to-reel tape recorder but more compact (8)
9. a virtual version of a real instrument (7,10)
13. electronic version of a well-known keyboard instrument (8,5)
16. original process for capturing recorded sound (8,4)
18. digitally recordable, highly portable, audio format (8)