The b7 takes the C# of a D major scale down to a regular C. This means that the notes in a D7 chord are D-F#-A-C. While a D7 can be used in any context, this type of chord can be found in a huge amount of jazz due to its massively ‘jazzy’ nature.
Answer: Quality drawing pencils, a sketchbook, quality drawing surfaces, variety of erasers, a good pencil sharpener, charcoal or contè, drawing pens/ ink, blending stumps/ tortillions.
