On June 03 1964, The Beatles (minus Ringo) entered Studio number two at EMI Studios on Abbey Road in London. This was to complete the upcoming third LP and the soundtrack to the first film. The session was supposed to consist of vocal and various instrumental overdubs for two of the last songs - mainly "Any Time At All" and "Things We Said Today".
Ringo did not make the session as he was very ill and stayed behind. Therefore, it was an opportunity for the remaining Beatles to record some demos for upcoming ideas and/or songs that were eventually given away to other artists. Three demos were recorded, two were eventually release commercially.
The first demo was by George Harrison who recorded his follow up to "Don't Bother Me" and entitled "You Know What To do". The instrumental line up consists of George on guitar and vocals, Paul on bass and John on tambourine. The song never ended up on any Beatles' LP in any commercial capacity, but was eventually released on the Apple 3-LP/2-CD "Anthology 1" set.
The second demo was by Paul McCartney who recorded a version of "It's For You" - basically a song that was eventually given to Cilla Black to record. There has been no release of this demo that I have heard.
The third and final demo was by John Lennon who recorded a version of "No Reply" that was initially meant to be given to singer Tommy Quickly although in the end The Beatles recorded this song for the fourth LP later in the year. The demo consists of John doing vocals and guitar, George on bass and Paul on drums. This demo was also commercially released on the Apple 3-LP/2-CD "Anthology 1" set. Both demos from this session are mono.