David McCallum has been played on NTS over 10 times, featured on 12 episodes and was first played on 23 January 2015.

David Keith McCallum, Jr. (19 September 1933 - 25 September 2023) was a Scottish actor and musician. McCallum was best know for portraying Russian spy Illya Kuryakin on the television series The Man from U.N.C.L.E. (1964-1968) and medical examiner Donald "Ducky" Mallard on the television series "NCIS" (2003-2023). As a musician, McCallum released four albums for Capital Records in the 1960s.

In the 1960s, McCallum recorded four albums for Capitol Records with music producer David Axelrod: Music…A Part of Me (Capitol ST 2432, 1966), Music…A Bit More of Me (Capitol ST 2498, 1966), Music…It's Happening Now! (Capitol ST 2651, 1967), and McCallum (Capitol ST 2748, 1968). The best known of his pieces today is "The Edge", which was sampled by Dr. Dre as the intro and riff to the track "The Next Episode", "M.I.A" by Missin' Linx, and "No Regrets" by Masta Ace. McCallum did not sing on these records, as many television stars of the 1960s did when offered recording contracts. As a classically trained musician, he conceived a blend of oboe, English horn, and strings with guitar and drums, and presented instrumental interpretations of hits of the day. The official arranger on the albums was H. B. Barnum. However, McCallum conducted, and contributed several original compositions of his own, over the course of four LPs. The first two, Music…A Part of Me and Music…A Bit More of Me, have been issued together on CD on the Zonophone label. On Open Channel D, McCallum did sing on the first four tracks, "Communication", "House on Breckenridge Lane", "In The Garden, Under The Tree" (the theme song from the movie Three Bites of the Apple), and "My Carousel". The music tracks are the same as the Zonophone CD. This CD was released on the Rev-Ola label. The single release of "Communication" reached No. 32 in the UK Singles Chart in April 1966.

In recent years, McCallum gained renewed international recognition and popularity for his role as NCIS medical examiner Dr. Donald "Ducky" Mallard in the American television series NCIS.