BRUNSWICK — The Monday Sonatas concert of the Bowdoin International Music Festival, at Studzinski Hall on July 23, was sold out. The audience, of festival students and regular concert-goers, must have sensed that something special was about to take place.

It included brilliant, sometimes definitive, performances of four masterworks that probably have never appeared on the same program before.

As befits an international festival, the seven musicians, faculty members and virtuosos in residence, were from six different countries, but they played together as if they had been rehearsing for months.

It is seldom that one attends a concert with such a sustained high level of musicianship, beginning with an exciting Mendelssohn Violin Sonata in F Major, played by Sergiu Schwartz, violin and Peter Basquin, piano. Melodic, simply harmonic and pleasant at first hearing, its breakneck speed was managed precisely, with perfect articulation in both parts.

It was hard to choose, but the high point of the evening was the great Cello Sonata of Claude Debussy, played by Yehuda Haanani, cello, and Emma Tahmizian, piano.

(The above is the beginning of a review. The full text will appear in Wednesday’s edition of The Portland Press Herald.)