Title Music of Mr. X In Bombay. This title music was a faithful replica of Ron Goodwin's "Miss Marple's Theme" from the Miss Marple series of films of the 1960s. Laxmikant - Pyarelal used this tune again the next year in the song "Pyar Baantte Chalo" ("Hum Sab Ustad Hain", 1965).