Even inanimate things that produce sounds—whether flute or harp—if they don’t make a distinction in the notes, how will what is played on the flute or harp be recognized?

I heard a sound from heaven like the sound of cascading waters and like the rumbling of loud thunder. The sound I heard was also like harpists playing on their harps.

I also saw something like a sea of glass mixed with fire, and those who had won the victory over the beast, his image, and the number of his name, were standing on the sea of glass with harps from God.

When He took the scroll, the four living creatures and the 24 elders fell down before the Lamb. Each one had a harp and gold bowls filled with incense, which are the prayers of the saints.