How to Tune to Open C 7-String (GCGCGCE)
A seven-string open C tuning (G-C-G-C-G-C-E) that Devin Townsend uses to fuse extreme low-end heaviness with lush, chiming open chords. Adding a low G beneath a stacked open C major gives an enormous range — from subterranean chugs to shimmering high harmonics — perfect for his layered, ambient wall-of-sound productions.
| String | Note | Frequency |
|---|---|---|
| String 6 | G1 | 49.00 Hz |
| String 5 | C2 | 65.41 Hz |
| String 4 | G2 | 98.00 Hz |
| String 3 | C3 | 130.81 Hz |
| String 2 | G3 | 196.00 Hz |
| String 1 | C4 | 261.63 Hz |
| String 0 | E4 | 329.63 Hz |
Fun Fact
Devin Townsend often designs custom tunings so that every open string reinforces a single chord, letting him layer dozens of guitar tracks that all ring in harmony. A seven-string open C like this gives him both the crushing low register of extended-range metal and the bell-like openness of an acoustic tuning.
String Tension & Setup Tips
Recommended Gauge:A heavy 7-string set (.010-.064) keeps the low G tight, ideally on an extended scale. The stacked C and G strings loosen slightly relative to standard, so enough mass on the low strings is important.
Open C 7-String (GCGCGCE)Intermediate
G - C - G - C - G - C - ENo Capo
Open C 7-String (GCGCGCE)Intermediate
G - C - G - C - G - C - ENo Capo
Open C 7-String (GCGCGCE)Intermediate
G - C - G - C - G - C - ENo Capo
Frequently Asked Questions
What is GCGCGCE tuning?
It is a seven-string open C major tuning: adding a low G below a stacked C-G-C-G-C-E open C. Strumming the open strings sounds a huge C major chord spanning nearly four octaves.
How do I tune a 7-string to GCGCGCE?
Set the seven strings low to high to G-C-G-C-G-C-E. Use a heavy low string for the deep G and match each octave of C and G with the tuner above.
Who uses GCGCGCE tuning?
Devin Townsend uses seven-string open C tunings like this to combine extended-range metal heaviness with lush, layered open chords in his wall-of-sound style.
What are the frequencies for GCGCGCE?
G1 = 49.00 Hz, C2 = 65.41 Hz, G2 = 98.00 Hz, C3 = 130.81 Hz, G3 = 196.00 Hz, C4 = 261.63 Hz, E4 = 329.63 Hz.