Ears roll off.
I suspect 20Hz is felt more than heard. There's very little acoustic music below 40Hz. Around a low F on the piano.
We can talk about 'tight bass'. I suspect to many that is the initial transient attack of a low note. I'm thinking this is more relevant in rock music or synth, from an electric bass or a machine. There is so much more to bass than tightness. Harmonics and decay are at least equally important. A string of live double basses' playing pizacatto is not all that tight.
Yes. Check the Bach video in my cartridge
review, 16Hz. Is a pipe organ a wind instrument?