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Re:Show HN: Launched my first app where people hum songs for... by alphydan on Tuesday March 27, 2018 @06:59PM (#16693610)
> just submit silence

433 by John Cage?

Re:Show HN: Launched my first app where people hum songs for... by michaericalribo on Tuesday March 27, 2018 @08:35PM (#16694118)
Careful,I think that's under copyright