| ID | Interpret | Skladba | Album | |
| 31. | David Antin | The Principle of Fit II - part 1 | Recorded in Washington, D.C. |  |
| 32. | David Antin | The Principle of Fit II - part 2 | Recorded in Washington, D.C. | |
| 33. | Patrick Barry and Dr. Tony Phillips | The Equivalence Principle | Science@NASA | |
| 34. | David Antin | The Principle of Fit II - part 1 | Recorded in Washington, D.C. | |
| 35. | Dave Westbrook | Repudiating Every Principle | The Voice of the Dragon | |
| 36. | Amidst The Chaos | Latent Principle | Catharsis |  |
| 37. | d.tar | listening principle '99 | | |
| 38. | Craig Dewe | Pareto Principle | connexted.com | |
| 39. | Hakan Lidbo | Backwards Principle | Poker Flat PFRCD03/LP03 | |
| 40. | Bill Long | Economics and the Second Principle | SS2006-10-15 | |
| 41. | Rob Cazin | The Uncertainty Principle | | |
| 42. | 1987-1122#13-BATTLE-(7787)LV | Act on Theorem Principle | Lee Vayle Sermons | |
| 43. | Hakan Lidbo | Backwards Principle | Poker Flat PFRCD03/LP03 | |
| 44. | Janet Jackson VS Royksopp | The Happy Principle | www.bass211.com | |
| 45. | The Good Luck Joes | The Peter Principle | | |
| 46. | The Rev Shana Goodwin - March 6, 2005 | Standing On Principle | All Souls Church, Unitarian - Washington, DC | |
| 47. | Janet Jackson VS Royksopp | The Happy Principle | www.bass211.com | |
| 48. | The Rev Shana Goodwin - March 6, 2005 | Standing On Principle | All Souls Church, Unitarian - Washington, DC | |
| 49. | Bloomberg News: Financial Markets, World Economies, Investing and Business | Volatility Index Rises 13.5% to Close at 18.89 | ((The Final Word)) Volatility Report | |
| 50. | Bloomberg News: Financial Markets, World Economies, Investing and Business | Volatility Index Rises 0.01 % to Close at 15.54 | ((The Final Word)) Volatility Report | |
| 51. | Kelly D. Brownell, David S. Ludwig | The Rudd Report: The Glycemic Index | Yale University | |
| 52. | Dive Index | Dive Index: Sole Fisherman | Insomnia Radio: Daily Dose | |
| 53. | Cold Archives Experiment | Remo Williams Vs. The Epire Index | Noise Art Patron | |
| 54. | Teacher Hal Ballew | The Pain vs Pleasure Principle | | |
| 55. | James Lucas | The Paradox Principle of Parenting - II | For Faith & Family Radio | |
| 56. | Empyrean Sky | The Pleasure Principle - High | Demo | |
| 57. | James Lucas | The Paradox Principle of Parenting - I | For Faith & Family Radio | |
| 58. | Teacher Hal Ballew | The Pain vs Pleasure Principle | | |
| 59. | Four Guys | 104. The Peter Principle in IMAX 3D | Four Guys Walk Into a Bar... | |
| 60. | Rabbi Akiva Tatz | SimpleToRemember.com - The Principle of Resurrection | Higher Knowledge | |
