| 1 | Block 4, Chapter 1, Activity 33: Flanging | The Open University | 0:41 |
| 2 | Block 4, Chapter 1, Activity 35: The Chorus Effect | The Open University | 1:03 |
| 3 | Block 4, Chapter 1, Activity 40: The TA212 Course Tune | The Open University | 0:54 |
| 4 | Block 4, Chapter 2, Activity 1: Plainchant in Context | The Open University | 0:41 |
| 5 | Block 4, Chapter 2, Activity 2: Guido's Hymn | The Open University | 0:40 |
| 6 | Block 4, Chapter 2, Activity 3: Organum in Context | The Open University | 3:30 |
| 7 | Block 4, Chapter 3, Activity 6: The Loneliness of the Hurdy-Gurdy Man | The Open University | 3:32 |
| 8 | Block 4, Chapter 3, Activity 18a: The Piano Roll in Context | The Open University | 2:01 |
| 9 | Block 4, Chapter 3, Activity 18b: The Piano Roll in Context | The Open University | 2:02 |
| 10 | Block 4, Chapter 3, Activity 23: The Player Piano in Context 1 | The Open University | 1:56 |
| 11 | Block 4, Chapter 3, Activity 24: The Player Piano in Context 2 | The Open University | 1:33 |
| 12 | Block 4, Chapter 3, Activity 27: Electronic Music Before MIDI | The Open University | 3:26 |
| 13 | Block 4, Chapter 3, Activity 54a: Leonardo Music | The Open University | 1:07 |
| 14 | Block 4, Chapter 3, Activity 54b: Leonardo Music | The Open University | 1:07 |
| 15 | Block 4, Chapter 3, Activity 60a: Simon's Course Tune Arrangements 1 | The Open University | 1:19 |
| 16 | Block 4, Chapter 3, Activity 60b: Simon's Course Tune Arrangements 1 | The Open University | 1:24 |
| 17 | Block 4, Chapter 3, Activity 60c: Simon's Course Tune Arrangements 1 | The Open University | 1:07 |
| 18 | Block 4, Chapter 3, Activity 60d: Simon's Course Tune Arrangements 1 | The Open University | 1:06 |
| 19 | Block 4, Chapter 4, Activity 12: Investigating Aliasing | The Open University | 0:38 |
| 20 | Block 4, Chapter 4, Activity 16: The Effect of Adding Dither Noise | The Open University | 0:20 |
| 21 | Block 4, Chapter 4, Activity 43a: Comparing Broadcasting Systems | The Open University | 0:34 |
| 22 | Block 4, Chapter 4, Activity 43b: Comparing Broadcasting Systems | The Open University | 0:32 |
| 23 | Block 4, Chapter 4, Activity 43c: Comparing Broadcasting Systems | The Open University | 0:33 |
| 24 | Block 4, Chapter 5, Activity 4: Edison's Phonograph 1 | The Open University | 0:10 |
| 25 | Block 4, Chapter 5, Activity 11a: Berliner's Gramophone | The Open University | 0:17 |
| 26 | Block 4, Chapter 5, Activity 11b: Berliner's Gramophone | The Open University | 0:10 |
| 27 | Block 4, Chapter 5, Activity 15: Fred Gainsberg Records Caruso | The Open University | 2:17 |
| 28 | Block 4, Chapter 5, Activity 24a: The Steel Tape Recorder | The Open University | 0:25 |
| 29 | Block 4, Chapter 5, Activity 24b: The Steel Tape Recorder | The Open University | 1:14 |
| 30 | Block 4, Chapter 5, Activity 27: Comparing Compact Cassette Tapes 1 | The Open University | 1:37 |
| 31 | Block 4, Chapter 5, Activity 30: Hi-Fi in Context | The Open University | 2:39 |
| 32 | Block 4, Chapter 5, Activity 32a: Restoration in Context 1 | The Open University | 1:10 |
| 33 | Block 4, Chapter 5, Activity 32b: Restoration in Context 1 | The Open University | 1:11 |
| 34 | Block 4, Chapter 5, Activity 35: Restoration in Context 2 | The Open University | 0:41 |
| 35 | Block 4, Chapter 5, Activity 49a: Restoration in Context 3 | The Open University | 8:55 |
| 36 | Block 4, Chapter 5, Activity 49b: Restoration in Context 3 | The Open University | 9:23 |