Science Busters

Game show
–Year: 2011-
–Year in film: 2017 ?
–Country: Austria
–Who in clothing: boys ~10-12, sailor suits
–Who in clothing 2:
–Available on DVD: yes ?
–I own: no
–Clothing occurrence: low *
–Rating:  5/10 *
–Rating: *****
–Comment: Some boys of the Vienna Boys Choir (Wiener Sängerknaben) in their (modern) black suits with light blue collars (thin stripes).

After finding the choir in Tom Turbo (rating (4)-5), I found this clip on YouTube. Uploaded in 2017. Exact episode and year of broadcasting unknown. Probably in s6e11, less likely s5e15 or s1e5 (plots that fit about sounds). (According IMDb in s7e6 "Sounds" But this episode has a different title and was aired in 2018 (according wunschliste) and not on Feb 21 2017). Maybe they also appeared in other episodes?

Series (and clip) subtitle: Wer nicht weiß muss alles glauben.

They had to destroy a glass by singing. At least partially on DVD (not sure about this episode).