Please give me some ideas for a jazzy but sombre chord progression.
To create a jazzy yet sombre chord progression, you could use the minor ii-V-I progression. This progression is often used in jazz and consists of a minor ii chord, a dominant V chord, and a minor i chord. You could also try using minor chords with a diminished 7th or half-diminished 7th added in, as this will create a darker, more mysterious sound. Additionally, you could try using a minor chord with a major 7th added in for a more bittersweet sound. Finally, you could experiment with adding some chromatic passing chords or tritone substitutions to your progression to further add to the sombre mood.