Niccolò van Westerhout was born in Mola, a township located in the province of Bari, Italy, on December 17, 1857. Of Dutch-Flemish origin, the van Westerhout family had migrated to Southern Italy in the sixteen hundreds. They settled first in Bari, later in Monopoli. Niccolò's grandfather, Nicola van Westerhout, decided to move to Mola, where he sired Onofrio Agostino, the composer's father.

At thirteen years of age, Niccolò composed incidental music for Shakespeare's Julius Caesar, showing a remarkable musical talent. The Township administration deliberated to help him achieve his full potential and funded his studies at the prestigious San Pietro a Majella Conservatory in Naples. There he perfected his composition technique working with Maestri Nicola De Gioiosa, Nicola D'Arienzi e Lauro Rossi.

During his short life, Niccolò van Westerhout composed a few operas:

- The never performed TILDE;

- CIMBELINO, premiered at the Teatro Argentina in Rome, in 1892;

- FORTUNIO, presented at the Teatro Lirico in Milan instead of at the world renowned Teatro alla

Scale, as initially set, as a result of a series of unfortunate events;

- DOÑA FLOR, commissioned by the Township of Mola, and staged in the local Opera Theatre

in 1896;

- The unfinished UNA NOTTE A VENEZIA (A Night in Venice);

- The unfinished IMOGENE;

- COLOMBA, represented posthumously, in 1925, at Teatro San Carlo in Naples.

Niccolò van Westerhout also composed piano concerts and some symphonies. Eminent musicologists wrote: "It is quite difficult to place his style within the landscape of the appreciation of Italian instrumental music prevailing at the end of the Nineteenth century. The Insonni [literally, the Insomniacs] - a collection of eleven pieces, supposedly composed at nighttime between 1891 and 1893, and published posthumously in 1915 by Ricordi - stand out for their excellence and uniqueness. They do not echo at all the Brahms model, tested by van Westerhout in his monumental Sonata in fa minore nor the generic, glittering, drawing-room like, Biedermaier-inspired academicism that infused most musical society of the era. The composer revealed by these short, thought-out and intense pages appears worthy of other inspired stimuli: from the most sophisticated Tchaikovsky to the enigmatic and visionary last Liszt, as well as Fauré and the future Debussy".

Niccolò van Westerhout died in Naples on August 21, 1898. He was only forty-one years old. After his death, his music was all but forgotten. Family and friends had no resources to organize concerts. The City of Naples paid for his funeral. His father Onofrio, His sister Antonia and his brother Vincenzo moved to Naples, where they died childless.

Ever since, the administration in Mola has never endeavored to make his compositions known. So far, the Township of Mola has named the theatre and a street after him. A memorial marble plate was placed on the wall of the house where he was born, and a statue was erected to represent his opera, DOÑA FLOR. Nothing else, except some occasional private initiatives. Even the Maestro's last resting location has long remained unknown.

Niccolò van Westerhout was buried in the monumental cemetery in Naples, in the same burial niche as his father and sisters Antonia e Angela, in an isolated location, in the potter's field, abandoned for over one hundred years.

On February 19th, 2007, Niccolò's remains were moved to Mola di Bari's cemetary and placed in the DeStasi mausoleum.