Titled Live From Brixton, the four-track release features performances Leave A Light On, Just You And I, Not Giving In and Fly Away With Me recorded at O2 Academy Brixton in October last year.
The EP is compatible with Amazon’s Alexa function via the Amazon Music app on iOS, Android and other devices.
Leave A Light On is the biggest seller of its four tracks, with 1,501,171 sales, according to the Official Charts Company. Just You And I is a fellow million-seller, with 1,384,682 sales.
His latest single, Wait For You, was released in June. It has 8,059,895 plays on Spotify, where Walker has 7,076,099 monthly listeners.