Four Experts it was with this headline that the press welcomed Vol. 10 of the encyclopedic Haydn series by the Leipzig String Quartet. The result is uncommonly rewarding in that as light is shed on a highly interesting developmental advance from divertimento mirth to mature chamber music and straight into the formative years of a revolutionary new musical genre. The Leipzig String Quartet are renowned musicians who have gained universal critical praise for their previous series of Mozart and Beethoven String Quartets. This next volume in their exploration of Haydn't oevre is a welcome addition to the catalogue.