The digitalization of the analog tape was done by Jonathan Stokes and Neil Hutchinson, engineers of the Classic Sound Ltd, who both used to be colleagues of the Decca Record Company. Answering the request from Stereo Sound, the two experienced engineers digitized the signal with great care and transferred it to mediums without any sound treatments such as sound compression. Hence, noises and sound dropouts present on the original master tape were kept intact, but we are now able to provide audio enthusiasts with the ultimate sound that is as close to the original master tape as possible and that only those involved in the recording process could have listened to.

Mozart and his family spent 15 months in London when the composer was eight years old. In London he wrote his first symphonies and first vocal works, serving major notice to the world. Those have been recorded before and are included here, but what's novel is the inclusion of music by other composers whom Mozart would have heard in London. Many of the works here receive their premiere recordings, and The Mozartists and conductor Ian Page ably sketch the influences they likely had on Mozart. Some of the influences from J.C. Bach have been recognized before, but Page goes more deeply into them: you can hear Mozart's way of assigning expressive meaning to transitional passagework, uncanny already at age eight, in the music of the "London Bach.