My 2 cents
Ruler of the 5th house (your creative and artistic expression) is Saturn in Pisces in 7th.
It denotes somewhat traditional approach so any classical instrument with strings (Pisces) would be a good choice (violin, guitar, piano etc.) or maybe some traditional instrument of your cultural background. Because Pisces are double-bodied sign it is likely that you will learn to play two or more instruments if you decide to push yourself in that direction.
It is unlikely that you will be a solo performer. Both Pisces and 7th house suggest partnership (band, orchestra).
Your musical expression will be of slower, softer and emotional nature (Pisces) combined with structure and rules (Saturn), so heavy metal band is unlikely.
You have exceptionally strong Mercury in your chart (in its domicile, ruler of the 10th house in the 10th). Mercury is also positioned on the benefic fixed star Rigel. You are very skillful with your hands and fingers so you should take this into consideration when choosing the instrument. It is quite possible for you to gain some sort of public recognition, renown or success in the field of music if you invest a lot of energy and effort (Mercury square Saturn) into this.
With that strong Mercury and Pisces being a mute sign, you should also consider writing as a form of your artistic expression.
On completely unrelated matter, I advise great caution when handling fire, flammable things, explosives or weapons. It is for the best to avoid any contact with such things.
Good luck with your music!