Males produce a complex song lasting 10 to 20 minutes, which they repeat for hours at a time.

"The Miracle" is one of the most complex songs from the band's last years.

There is also a special choir event that sings in harmonies and more complex songs.

They said the sparrows build up complex songs from smaller parts, much the way humans learn and reproduce language.

Not like any human or humanoid music known, but a very definite and complex song.

They play complex songs with elements of math rock which retain a pop sensibility.

Queen is that sort of band; they had complex songs with a lot of parts to them.

The Australian lyrebird, which has a really complex song, sings for hours when there are few females in the area to even hear him.

Even in his most complex songs, he never ruled out the possibility that anarchy could be an improvement.

Currawongs from some areas sing much more complex songs than others.