- hidden_treasure by FoolBoyMedia @ freesound.org | License: Attribution NonCommercial 4.0
- 80s_synth by paulnorthyorks @ freesound.org | License: Attribution 4.0
- choir_notification_e_major by DiArchangeli @ freesound.org | License: Creative Commons 0
- clean_chimes SergeQuadrado @ freesound.org | License: Attribution NonCommercial 3.0
- harp_riff by DaVince21 @ freesound.org | License: Creative Commons 0
- police_radio_chatter by -Andreas @ freesound.org | License: Creative Commons 0
- piano_riff by CGEffex @ freesound.org | License: Attribution 4.0
- 357_unholster by nioczkus @ freesound.org | License: Creative Commons 0
- police_siren_chirps.mp3 by MultiMax2121 @ freesound.org | License: Creative Commons 0
- radio_static_countdown.flac by qubodup @ freesound.org | License: Creative Commons 0
- police_siren.wav by guitarguy1985 @ freesound.org | License: Creative Commons 0
- modem-ringtone2.wav by jgoerzen @ freesound.org | License: Sampling+
- large_doorbell.wav by gregswinford @ freesound.org | License: Attribution 4.0
- silly_'you_have_a_visitor'_tone.wav by KidsCastTechy @ freesound.org | License: Creative Commons 0
- 1950s_mechanical_doorbell.wav by klankbeeld @ freesound.org | License: Attribution 4.0
- classic-ding-dongs/electronics.wav by DeVern @ freesound.org | License: Creative Commons 0
- doorbell by kwahmah_02 @ freesound.org | License: Attribution 3.0
- "Child saying I'm here" - Logan Kish, Kitchener Ontario, Age 4, 2023 @ freesound.org | License: Creative Commons 0
- ring_stars - Gregg Davi, 2023, SkyBell Technologies Inc
- the_skybells - Gregg Davi, 2023, SkyBell Technologies Inc
- frequency_sweep - 2023, SkyBell Technologies Inc
- "Shave and a haircut, two bits" - Melody by Charles Hale, "At a Darktown Cakewalk", 1899