Create singable melodies on the guitar or synth. Even without lyrics, a strong motif gives the listener something to hold onto.
If you are looking to write or analyze an instrumental piece with this gritty, classic title, 1. The Sonic Atmosphere
If you're trying to strip vocals from an existing song to create an instrumental version:
Use left/right balance to create a sense of space, making the "clink" of the instruments feel like they are moving around the listener’s head. 3. Practical Tools for Creation