The scat singing that dominates much of the song is evidence of the jam-beginnings as improvisation. However, according to Queen bassist John Deacon (as quoted in a French magazine in 1984), the song's primary musical songwriter was Freddie Mercury – though all contributed to the arrangement.

Yes, Queen and David Bowie did several live performances of Under Pressure. The most notable of the live shows was at the Freddie Mercury Tribute Concert in 1992, where Bowie appeared with Queen on stage to sing the song in honor of their late frontman. Bowie performed the track with Queen at Live Aid in 1985 as well.

The authors of “Ice Ice Baby” sampled the bassline of “Under Pressure” without crediting Queen or David Bowie or paying royalties. The same bassline from Under Pressure is used in the introduction and choruses of “Ice Ice Baby” without any additional layers, making the similarity glaringly apparent to listeners.

: in a state of stress or anxiety because of having too much to do. They both work well under pressure. 3. : being made to feel forced to do something (as by arguments, threats, etc.) The mayor is under pressure to resign.