Nocturne in E minor, Op. posth. 72 (Chopin)

The Nocturne in E minor, Op. posth. 72, No. 1, was composed by Frédéric Chopin for solo piano in 1827. It was Chopin's first composed nocturne, although it was the 19th to be published, in 1855, along with two other early works: a Funeral March in C minor and Three Ecossaises. The composition features an unbroken line of quaver triplets in the left hand set against a slow melody of minims, crotchets, quaver duplets and triplets. It consists of 57 bars of common time with the tempo given as "Andante", 69 bpm.
An informal analysis of the piece is as follows:
According to Casimir Wierzyknski, in his book "The Life and Death of Chopin", "[U]p until then this form [the nocturne] had been the exclusive domain of John Field, an Irish-born composer. But his Nocturne in E minor did not satisfy him [Chopin] and was published only posthumously."
This piece was played by the actor Jeri Ryan while portraying Seven of Nine at the beginning of the "Star Trek Voyager" episode "". The piece was also performed by Doc Holiday in the 1993 movie "Tombstone" and was used as the main theme in "The Secret Garden" (1987).