on Listening to a ticking noise, Severus Snape sings to it. Other figures join in until eventually they discover the source of the ticking is really a pipe bomb, which subsequently explodes. The video was the landslide https://www.youtube.com/watch?si=MCEt_mbAaox2Zlzn&embeds_referring_euri=https%3A%2F%2Fwww.bing.com%2F&embeds_referring_origin=https%3A%2F%2Fwww.bing.com&source_ve_path=Mjg2NjQsMTY0NTA2&v=O5t_m4VAFEc&feature=youtu.be