Coldcut, a Brit electronic music duo who also dabbled in audio/video mix software, made a simple online music tool for Absolut Vodka in 1998. (Absolut was targeting the youth market and set up a site called Absolut DJ.) Coldcut's thing was a simple grid on which you placed sound effects/samples sprites. A dot moving through the grid would play each in turn as it hit them. It was really good fun, but I can't find it now. Might have been made in Flash - or perhaps it was still known as Shockwave Flash back then.

Here's an archive article about Absolut's campaign:

https://www.campaignlive.co.uk/article/absolut-vodka-launche...

Coldcut's Wikipedia entry:

https://en.wikipedia.org/wiki/Coldcut