PHONOSYNTHESIS Led Zeppelin

PHONOSYNTHESIS Led Zeppelin 1968-1979

Members: From 1968, Jimmy Page, Robert Plant, John Paul Jones and John Bonham. In 1980, 1 year after the LP In Through the Out Door, the band splits due to the disappearance of Bonham.

Genres: Hard rock, Blues rock, Heavy Metal, Folk rock.

Group timeline (production between the first and last LP): 11 years.

LP's produced: 8 LP's (One double, 10 in total): 73 songs = 6 hours with 22 minutes 22 seconds in 11 years of production approx.

Production density per year (average): 6.63 songs, 34:40 minutes. Shortest song: 2:06. Longest song:  11:04.

Global average length of a song: 5:13. Note: The band with less songs per year and with the longest song average, followed by Pink Floyd. The group that has the longest short song and the shortest year song average. Along with Pink Floyd,this isthe band with the thinnest Phonosynthesis.

Sales (LP's, CD'S, singles, digital format included):  137.2 million.

Track 1.- Phonosynthesis Led Zeppelin. 1969. 9 songs. Shortest song: 2:13. Longest song: 8:28. Average song: 4:54. LP total time = 44:26 (2,666 s). Phonosynthesis duration: 8:28 (508 s). DRF = 5.24. Note: LP where the band creates a fusion between Blues and Rock, defining aspects of the new genre Heavy Metal conformed by the distorted Jimmy Page's guitar and Robert Plant's dramatic and sobbing singing voice.

Track 2.- Phonosynthesis Led Zeppelin II. 1969. 9 songs. Shortest song: 2:40. Longest song: 6:20. Average song: 4:36. LP total time = 41:24 (2,484 s). Phonosynthesis duration: 6:20 (380 s). DRF = 6.53. Note: Considered the heaviest record of the band.

Track 3.- Phonosynthesis Led Zeppelin III. 1970. 10 songs. Shortest song: 2:26. Longest song: 7:25. Average song: 4:18. LP total time = 43:04 (2,545 s). Phonosynthesis duration: 7:25 (445 s). DRF = 5.80.
Track 4.- Phonosynthesis Led Zeppelin IV. 1971. 8 songs. Shortest song: 3:31. Longest song: 8:02. Average song: 5:18. LP total time = 42:25 (2,545 s). Phonosynthesis duration: 8:02 (482 s). DRF = 5.28. Note: Before this forth LP the band maintained certain homogeneity in the duration of its songs, most of them with a time between 3:30 and 5:00 minutes.

Track 5.- Phonosynthesis Houses of the Holy. 1973. 8 songs. Shortest song: 3:17. Longest song: 7:39. Average song: 5:07. LP total time = 40:58 (2,458 s). Phonosynthesis duration: 7:39 (459 s). DRF = 5.35. Note: The short songs tend to get longer. In fact, the band hasn't had in 5 records any song lasting less than 2 minutes.

Track 6.- Phonosynthesis Physical Graffiti. 1975. Double LP. 15 songs. Shortest song: 2:06. Longest song: 11:04. Average song: 5:29. LP total time = 82:15 (4,935 s). Phonosynthesis duration: 11:04 (664 s). DRF = 7.43. Note: First track that lasts more than 8 minutes. The most extreme LP concerning the difference between the shortest and the longest song.

Track 7.- Phonosynthesis Presence. 1976. 7 songs. Shortest song: 2:58. Longest song: 10:25. Average song: 6:20. LP total time = 44:25 (2,665 s). Phonosynthesis duration: 10:25 (625 s). DRF = 4.26. Note: The average time per song jumps up drastically.

Track 8.- Phonosynthesis In Through the Out Door. 1979. 7 songs. Shortest song: 3:17. Longest song: 10:32. Average song: 6:03. LP total time = 42:25 (2,545 s). Phonosynthesis duration: 10:32 (632 s). DRF = 4.02. Note: This LP and the one before are very similar in terms of track numbers and durations.

Track 9.- Phonosynthesis Led Zeppelin 1968-1979. 73 songs = 6 hours with 21 minutes 22 seconds (22,882 s) condensed in an 11 minutes, 4 seconds track (664 s). DRF: 34.46. Note: The Total Phonosynthesis of the group has a very low density.