1. Electric Guitar: A staple of both genres, the electric guitar offers a wide range of tones and effects, from bluesy bends to searing solos. It's used for both rhythm and lead playing, and its versatility makes it a perfect fit for the improvisational nature of jazz and the power chords of rock.
2. Electric Bass: The electric bass provides the foundation for the rhythm section in both jazz and rock. Its deep, resonant tones ground the music and give it a driving force. Jazz bassists often use intricate walking bass lines, while rock bassists might play powerful grooves or melodic lines.
3. Synthesizer: While synthesizers are more common in electronic music, they also play a significant role in both jazz and rock. They can create a wide array of sounds, from lush pads to swirling textures, and have been used to create experimental soundscapes, atmospheric textures, and even melodic solos.