Electric guitar
Electric guitars were guitars that used electric signals to create sound. A member of the Lorells used an electric guitar. The Seventh Doctor later played with it. (TV: Delta and the Bannermen)
When Rakweed was going to cover the Earth. Clyde Langer used Haresh Chandra's electric guitar to make the same sounds and vibrations as the school bell of the Park Vale Comprehensive School, which had destroyed the Rakweed before. The guitar sound broke the plants' communication methods and neutralised the Rakweed spores. This killed off the Rakweed and saved Luke Smith's life. (GAME: Sound) Later the electric guitar stood inside Clyde Langers bed room. (TV: The Curse of Clyde Langer)
The Twelfth Doctor showed himself to be an excellent guitar player. He used his electric guitar when challenged to an "axe fight" by Bors, although the medieval audience did not understand the play on words. He played "Pretty Woman" when noticing that Clara Oswald and Missy were watching. (TV: The Magician's Apprentice) He also played the same electric guitar in his TARDIS, this time playing Beethoven's Fifth Symphony, while explaining the Bootstrap Paradox. (TV: Before the Flood) He later played Amazing Grace on the same guitar when Petronella Osgood contacted him about the Zygon uprising. (TV: The Zygon Invasion)
In 2050 Darius Pike played the electric guitar, but the guitar sound was stopped by an Aeolian. (TV: Aeolian)