Title is album title

From 1963 to 1970, almost the whole of the writing, eight songs use it. 'Please Please Me' came first, on the Please Please Me album, and 'Let It Be' last, on the Let It Be album. 'A Hard Day's Night' and 'Help!' are two of them, and Paul sings six of the eight. It goes quiet after 1967 and comes back in 1970 for 'Let It Be'. The singing splits Paul on three, John on one and Ringo on one. Three of them share it on 'Sgt. Pepper's Lonely Hearts Club Band (Reprise)'. On 'Let It Be': title track of the final released album. On 'Help!': title track of the 1965 album and film. Of the eight, 'Yellow Submarine' went through echo chamber, which only three of their recordings did.