Future Sounds

First we have a strange howl from a flight of new Russian fighters flying over Moscow:

Russian Su-57 Felon fighters during a rehearsal of Victory Day parade on 5 May.

Video by https://t.co/JWItzCR66F pic.twitter.com/2iakPpyZVN

— Dylan Malyasov (@DylanMalyasov) May 7, 2021

Then we have the SpaceX Starship prototype SN-15 resonating. It sounds like someone filling a really big bucket:

 
Starship | SN15 | High-Altitude Flight Test
SpaceX
The Starship test flight was a success. SN15 flew, landed and didn't blow up. We may get back to the moon yet.

Twitter video via Defense Blog

YouTube video via daily timewaster