Pearl Championship Marching Tenor Tuning (6, 10, 12, 13, 14)

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D# Half-diminished 7th Chord
6” Spock - A6 (Or a pitch that sounds high and “shotty”)
10” Drum 1 - C#6
12” Drum 2 - A5
13” Drum 3 - F#5
14” Drum 4 - D#5

I use the InsTuner app to get the pitches for each drum.