Musical Instruments are items used primarily for roleplaying in Tibia. Some of them can be carried around with you and others are too large to carry. Some of them can be purchased from Instrument Shopkeeper NPCs, but others are much more rare.
The immovable object Horn works like a musical instrument.

There are two Achievements connected to musical instruments: Ministrel and Rockstar.

Musical Instruments

Name		Attributes	Weight	Dropped By
Bongo Drum		Unknown.	29.00	None.
Cornucopia		Creates grapes and plays yellow musical notes when used.	14.00	Dharalion.
Didgeridoo		Plays green musical notes when used.	42.00	Madareth.
Drum		Plays green musical notes when used.	32.00	None.
Fanfare		Plays green musical notes when used.	23.00	None.
Harp			N/A	None.
Horn of Sundering			??.??	None.
Lute		Plays green musical notes when used.	34.00	Crazed Beggar, Vashresamun, Madareth.
Lyre		Plays green musical notes when used.	12.50	Banshee, Hero, Spectre, Madareth.
Music Box (TibiaSpace)		None.	27.00	None.
Panpipes			8.20	Vashresamun
Party Trumpet		Plays green musical notes when used.	0.50	None.
Piano			N/A	None.
Post Horn		Plays green musical notes when used.	15.00	None.
Royal Fanfare		Plays musical notes when used.	25.00	None.
Simple Fanfare		Plays green musical notes when used.	22.00	None.
Small Whistle			50.00	None.
Waldo's Post Horn			22.00	None.
War Drum		Plays red musical notes when used.	30.00	Madareth.
War Horn			15.00	Plaguesmith, Madareth.
Wooden Flute		Plays green musical notes when used.	2.00	Priestess, Marid, Fahim The Wise, Madareth.
Wooden Whistle			1.00	Fernfang

Items in Tibia Body Equipment Helmets Armors Shields Legs Spellbooks Boots Weapons Axe Weapons Distance Weapons Club Weapons Sword Weapons Wands Rods Ammunition Old Wands and Rods Tools and other Equipment Amulets and Necklaces Rings Keys Light Sources Tools Taming Items Household Items Books Containers Contest Prizes Decorations Documents and Papers Dolls and Bears Furniture Kitchen Tools Musical Instruments Trophies Plants, Animal Products, Food and Drink Creature Products Food Liquids Plants and Herbs Other Items Clothing Accessories Enchanted Items Game Tokens Magical Items Metals Party Items Quest Items Rubbish Runes Valuables