How does key affect a song?

What difference does the key of a song make?

Music for solo voice and piano is often made available in different keys to suit the voice range of different singers. You would notice if the same singer sang a song in different keys because it would lie differently within the voice range.

Does key change a song?

A key change between sections. In terms of song structure, this is because the tone is often supposed to be different, and a different key helps you create more contrast – but you can get usually away with closely related keys here, like the relative or parallel major/minor.

Does the key of a song matter?

In other words, it's quite possible to generate interesting chord progressions even if you don't know the key of your song. Your ears will tell you if the progressions are working. So that's one answer: It doesn't matter if you don't know the key of your song; you can still come up with progressions that sound great.

What does the key Tell us in music?

A key signature is a visual symbol, printed on a musical staff, that indicates what key a section of music is written in. Key signatures are represented by using accidentals—better known as sharps and flats. The number of sharps or flats indicated in the key signature will tell the player what key the music is in.