Of the first 500 episodes (1964–73), only about 20 complete recordings remain in the BBC archives, and the majority of these are from 1969 onwards. The earliest surviving footage dates from 26 February 1964, and consists of performances by Billy J. Kramer and the Dakotas and the Dave Clark Five. Some programmes exist only partially (largely performances that were either pre-recorded or re-used in later editions). There are also two examples of rehearsal footage, which are both from 1965, one which includes Alan Freeman introducing the Seekers, and another with Sandie Shaw rehearsing "Long Live Love"—both believed to be for the end-of-year Christmas Special. There are also cases of shows that exist only in their raw, unedited form. The oldest complete episode in existence was originally transmitted on Boxing Day in 1967 (only five complete recordings from the 1960s survive, two of which have mute presenter links). The most recent that is not held is dated 8September 1977. Most editions after this date exist in full, except a few 1981–85 episodes recorded live feature mute presenter links (These episodes were skipped on the BBC Four re-runs).