During the struggle, Jaronski picked up a glass bottle and struck MacFarlane, knocking him to the ground.
The court heard Jaronski restrained MacFarlane by placing his knee on his neck and “pressing down” with his body weight.
He then tied two ligatures around his neck after his victim lost consciousness.
Jaronski also forced a pair of boxer shorts into his mouth, before leaving the flat wearing blood-stained clothing.
He later called police on 999 to confess, saying: “I killed Iain. He is dead.”
The musician is survived by his parents and sister.
In a statement, his family said: “His immeasurable loss will be felt deeply by all who knew him.”
The court heard that Jaronski had “no excuse” for attacking a man he appeared to have been on “good terms” with.
Defence advocate KC Richard Goddard said: “He says that the behaviour was the greatest regret of his life.”
