April in Paris is a jazz standard that is particularly associated with Count Basie's Orchestra (really a big band). It is familiar to audiences thanks to a famous cameo appearance by the Count Basie Orchestra in the film, Blazing Saddles. Among the famous vocal performances of this song are those by Frank Sinatra and Sarah Vaughan.
Another classic song is"April Showers," which has been popular for almost a century. It was recorded by Al Jolson and popularized in the film, The Jolson Story. More recently, it was recorded by Sugarland.