Gabriel von Wayditch begins work on his last opera The Heretics, which is still not completed when he dies in 1969.Quartetto Cetra dubs the choruses for the Italian release of Disney's Dumbo.Igor Stravinsky and Robert Craft meet for the first time.Otis Rush moves to Chicago and begins his musical career.Columbia Records introduces the 33 + 1⁄ 3 rpm LP ('long playing') record at New York's Waldorf-Astoria Hotel, featuring 25 minutes of music per side, compared to the four minutes per side of the 78 rpm record, the previous standard for gramophone records.Patti Page becomes the first artist to use the technique of multi-track overdubbing (later popularized by Les Paul & Mary Ford).

Al Jolson is voted the 'Most Popular Male Vocalist' of the year by a Variety poll.

Hans Werner Henze becomes musical assistant at the Deutscher Theater in Konstanz.

December – Perry Como has his first television Christmas Special.

November 29 – First live telecast of a complete opera by the Metropolitan Opera, of the opening-night performance of Giuseppe Verdi's Otello, starring Ramón Vinay, Licia Albanese, and Leonard Warren, on ABC-TV.

June 21 – Columbia Records introduces the long-playing record album in a public demonstration at the Waldorf-Astoria Hotel in New York City.

Summer – John Cage begins teaching at Black Mountain College in North Carolina.

June 5 – Opening of the first Aldeburgh Festival, founded by Benjamin Britten, Eric Crozier and Peter Pears.

May 20 – The Second International Congress of Composers and Music Critics 1948 opens in Prague.

April 21 – National Youth Orchestra of Great Britain gives its first concert.

9 is played on television in its entirety for the first time in a concert featuring Toscanini conducting the NBC Symphony Orchestra.

March 20 – Renowned Italian conductor Arturo Toscanini makes his television debut, conducting the NBC Symphony Orchestra in the United States in a program featuring the works of Richard Wagner.It is during this first edition that Suzy Delair sings for the first time the song ' C'est si bon' to a cabaret where Louis Armstrong ended his evening. February 25 – First Nice Jazz Festival with Louis Armstrong, Stéphane Grappelli, Claude Luter, Mezz Mezzrow and Django Reinhardt.January 10 – The Amadeus Quartet gives its first recital under this name, at the Wigmore Hall in London.

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