Breeze ambient sounds were updated in 1.21.50.25 to use the idle_air sound when in the air.
However, both idle_ground and idle_air are now using incorrect pitches and volumes in sounds.json. These sounds are using the pitch configuration for whirl instead of the idle sound. (see MCPE-180029)
Bedrock Configuration:
[media]Java Configuration:
[media]Expected Result
Breeze idle sounds play with volume 1.0 and pitch variation [ 0.8, 1.2 ].
Observed Result
Breeze idle sounds play with volume variation [ 0.8, 1.0 ] and pitch variation [ 0.7, 1.1 ].
To Fix:
The proper configuration actually does not require any event-specific pitching, because the default entity volume and pitch variation are correct for the idle sounds.
Here is the right configuration for Bedrock:
[media]Attachments
Comments 4

Hi!
Does this issue occur on regular Bedrock and preview?
Can you also show where do you found sound.json in Preview?
This ticket will automatically reopen when you reply.
Replying to Zgajak:
This issue does not occur on regular Bedrock; only the Preview.
The error has been present for the "ambient" effect since 1.21.0, as documented in MCPE-180966, but the issue with the "ambient.in.air" effect is brand-new in 1.21.50.25, due to a partial fix of MCPE-180023.
The sounds.json file with incorrect Breeze ambient sound setup can be viewed in the Preview branch of the bedrock-samples GitHub: https://github.com/Mojang/bedrock-samples/blob/preview/resource_pack/sounds.json