The Fellowship Of The Ring Main Theme. Original song by Enya.
From The Fellowship Of The Ring (credits). Original song by Edward Ross.
The Two Towers Main Theme. Original song by Emiliana Torrini.
From The Return Of The King. Original song by Liv Tyler.
From The Return Of The King (diegetic). Original song by Billy Boyd.
The Return Of The King Main Theme. Original song by Annie Lennox.
From An Unexpected Journey (diegetic). Original song by Richard Armitage and the Dwarf cast.
An Unexpected Journey Main Theme. Original song by Neil Finn.
The Desolation Of Smaug Main Theme. Original song by Ed Sheeran.
The Battle Of The Five Armies Main Theme. Original song by Billy Boyd.
(1) 'The Green Dragon' from The Return Of The King (diegetic). Original song by Billy Boyd and Dominic Monaghan
(2) 'Ho! Ho! Ho! To The Bottle I Go' from The Fellowship Of The Ring (diegetic). Original song by Billy Boyd and Dominic Monaghan
(3) 'Blunt The Knives' from An Unexpected Journey (diegetic). Original song by the Dwarf cast
(4) 'The Man In The Moon Came Down Too Soon' (diegetic). Original song by James Nesbitt
Bonus track: 'Song Of Durin' by Eurielle and Peter Hollens' cover (not from the movies).