ultrasonik | Leave Those Kids Alone
In 2018, 11-year-old Alex Bonadonna, his 8-year-old sister Addi (along with their bandmates and manager/Dad) launched “Leave Those Kids Alone”, dreaming of though likely never imagining the success that they’d have, performing over 400 shows across Ontario, Michigan and beyond.
In September of 2025, after one final summer filled with shows to appreciative audiences of their classic rock tribute show, Alex, Addi, Luca Angelini and Louis Diab wrapped up the “Graduating Tour” of Leave Those Kids Alone.
ultrasonik was introduced in May 2025 as the name under which new original songs would be released under. Accordingly, ultrasonik’s Mach One album features 12 songs, following up on groundwork album, released by Leave Those Kids Alone in 2022 and the Invisible Enemy single release in 2021.
The new name allows ultrasonik to form its own unique identity.
Brother-sister duo of Alex and Addi are paired with Luca, as they have been since 2021.
Enough / Slipstream / West Palm / The Other Side - ultrasonik originals LIVE PERFORMANCE
REPOST!!! FULL SHOW: Essex Centre StreetFest - October 11, 2025
REPOST! Stroll The Street in Belle River, Ontario - October 10, 2025
Songwriting Snippet - West Palm
REPOST!!! Open Streets Windsor - FULL SHOW!
West Palm - ultrasonik (Official Music Video)
REPOST!!! SET 2 from Sanford, Michigan - September 14, 2025
REPOST!!! SET 1 from Sanford, Michigan - September 14, 2025
An important update, one we share with gratitude and love.
REPOST!!! Stroll The Street (September 2025) in Belle River (Lakeshore), Ontario!!!
REPOST!!! SET 1 LIVE AT ROTARY CIRCLE - LaSalle, Ontario!
REPOST!!! Live At The Square, City Hall - Windsor, Ontario!!!
Songwriting Snippet - Slipstream
Slipstream - ultrasonik (Official Music Video)
SET 2 (partial) from Saline Summerfest - Saturday, August 9, 2025
REPOST! Fenton, Michigan - August 7, 2025 (both sets)
REPOST! Leisure Lake Campground - August 2, 2025
REPOST!!! Music Night at The Safety Village presented by Community Living Windsor
REPOST!!! Tecumseh Ribfest - July 26, 2025
REPOST!!! Grand Bend, Ontario - July 2, 2025
REPOST!!! Wildwood On The Lake - June 29, 2025
"I wish I could see what it's like on stage for them..." You can!
REPOST! "Bob Knob" - Marlette, Michigan
Midland, Michigan - FULL SHOW REPOST!
Fly - ultrasonik (Unofficial Music Video)
Songwriting Snippet - Enough
This clip was a happy accident! Ever wonder what it sounds like without mics?
Enough - ultrasonik (Official Music Video)