Bassoonists get a bit confused about the proper nomenclature for all the notes and octaves in our range.  Here is a table showing correct names [left column] and frequencies in hz [right column], starting at low B flat and going to high F.

A#1/Bb1 58.27
B1 61.74
C2 65.41
 C#2/Db2 69.30
D2 73.42
 D#2/Eb2 77.78
E2 82.41
F2 87.31
 F#2/Gb2 92.50
G2 98.00
 G#2/Ab2 103.83
A2 110.00
 A#2/Bb2 116.54
B2 123.47
C3 130.81
 C#3/Db3 138.59
D3 146.83
 D#3/Eb3 155.56
E3 164.81
F3 174.61
 F#3/Gb3 185.00
G3 196.00
 G#3/Ab3 207.65
A3 220.00
 A#3/Bb3 233.08
B3 246.94
C4 261.63
 C#4/Db4 277.18
D4 293.66
 D#4/Eb4 311.13
E4 329.63
F4 349.23
 F#4/Gb4 369.99
G4 392.00
 G#4/Ab4 415.30
A4 440.00
 A#4/Bb4 466.16
B4 493.88
C5 523.25
 C#5/Db5 554.37
D5 587.33
 D#5/Eb5 622.25
E5 659.25
F5 698.46