Many examples of rounded binary are found among the church sonatas of Vivaldi including his Sonata No. 1 for Cello and Continuo, First Movement, while certain Baroque composers such as Bach and Handel used the form rarely.

Stylistically, his works range from the strict pattern of Corelli's church sonatas to the galant work of Durante.

The sonatas are like Baroque church sonatas, Mr. Tetzlaff said, with the G-minor Sonata representing the Christmas story, the A-minor sonata the Passion of Christ and the C-major Sonata the Resurrection.

At noon, Mozart's "Coronation" Mass, "Regina Coeli" and church sonatas for organ and strings; hymns and Gregorian chants.

Indeed, all three pieces after intermission - a skillful Trio Sonata in G by the Scottish composer Thomas Erskine, Haydn's Divertimento in C (H.V:16) and three church sonatas by Mozart - straddled two styles, combining both the formality of the old and the tuneful simplicity of the new.

Later, Wolfgang Amadeus Mozart would compose seventeen "church sonatas", but these served a different purpose.

His work consists mainly of masses and other liturgical works that also include instrumental church sonatas.

In addition, Brentner published a collection of six offertories for chorus, strings, and continuo entitled Offertoria solenniora (1717) as his opus 2 and a collection of six church sonatas, Horae pomeridianae seu Concertus cammerales (1720) as his opus 4.

Today 4 P.M., Candlelight Concert, "Organ Concerto No. 4 in F" by Handel, Maria Coffin, organist; two church sonatas for organ and strings by Mozart, carols for choir, organ and congregation.

At 10 A.M. next Sunday, Casciolini's Mass in G; motets by Monteverdi and Rutter; church sonatas by Corelli.