<s>[INST] Which notes harmonize with E and what might be a good note to play outside of the key of E for a dissonant effect? [/INST] The notes that harmonize with the key of E major are:

-   E - the tonic or keynote
-   G# - the major 3rd above E
-   B - the perfect 5th above E
-   D# - the major 7th above E

To achieve a dissonant, outside-the-key effect, you could play:

-   F or F# - a minor 2nd or major 2nd interval above E, which would create a dissonant clash
-   A - a minor 6th interval above E, which is also dissonant and outside the key of E major

Playing notes a semitone or whole tone away from the notes in the key of E will create tension and dissonance. The further away from the key you get, the more discordant the effect.</s>\ <s>[INST] What are some examples of songs that use this successfully [/INST] Some examples of songs that use dissonance and outside-the-key notes effectively include:

- "Purple Haze" by Jimi Hendrix: The guitar riff in the song makes use of the flat fifth, which creates a tritone interval that is highly dissonant and creates a sense of tension.
- "Bohemian Rhapsody" by Queen: The operatic section of the song features a chord progression that includes an augmented chord, which is made up of two major thirds and creates a highly dissonant sound.
- "The Man Who Sold the World" by David Bowie: The guitar riff in the song makes use of a flattened seventh note, which creates a sense of tension and dissonance.
- "Tomorrow Never Knows" by The Beatles: The song features a drone-like sound created by a single chord, and includes elements of Indian music that make use of dissonant intervals and unusual scales.

These are just a few examples, but there are countless songs that make use of dissonance and outside-the-key notes to create interesting and unique sounds.</s>