Finn's flute

Finn's flute appears for the first time in "Prisoners of Love" and is played by Farmworld Finn at the end of "The Lich". It is a woodwind instrument crafted from the branch of a tree and poorly mended with tape, since Finn broke it trying to pick the lock to a sad ogre's heart. Finn throws it in an attempt to spear the Ice King, but it unravels before it can hit him. Finn seems to have a decent level of skill with it, but it is not the only instrument he plays. When Finn needed to play music well in a battle against Death in "Death In Bloom," he notes that Jake is the musical one of the two. Furthermore on a wall with a great variety of musical instruments, Finn does not pick a flute or any similar instrument, meaning the flute playing had little significance. Although it is seen being played by an alternate universe Finn at the end of "The Lich." The flute has also appeared in the episode "Finn the Human ", when Farmworld Finn shoves the flute in Tromo 's nose.

Appearance
Finn's flute appears to be a flute made of a tree branch; it also has 4 keys and a lip plate, but unlike any other flute this flute doesn't have a tuning cork. The flute is damaged and is messily "repaired" with tape, which is seen wrapped around it.