* https://freesound.org/people/DDmyzik/sounds/555803/
* https://freesound.org/people/Setuniman/sounds/387922/
* https://freesound.org/people/qubodup/sounds/331381/
* https://freesound.org/people/davethetech/sounds/360432/
* https://freesound.org/people/omerbhatti34/sounds/521552/
    * https://freesound.org/people/Czarcazas/sounds/330800/
* https://freesound.org/people/Kneeling/sounds/448004/