For every key signature, there are two possible keys - one major and one minor. The two keys which share the key signature are called relatives, e.g. D minor is the relative minor of F major and vice versa. The table below shows all key signatures used in music, with the relative major and minor keys written under each one.
Another common sixteenth note timing is when a sixteenth note is played after a dotted eighth note, i.e.
The dot placed after the eighth note lengthens the note by half its value. The dotted eighth note is equivalent to the duration of three sixteenth notes, i.e.
Here is a popular South American folk song which moves between the keys of G minor and Bb major which are relative keys. This melody makes use of both the harmonic minor and the natural minor. It also features the dotted eighth note figure shown above.