Maximilian, Friedrich, Elector of Cologne until the year 1784; the first noble patron of Beethoven, whom he placed under the instruction of the Court organist Von der Eeden, and afterwards, on the death of that musician, under Neefe; as an acknowledgment for which kindness, and in proof of the success which had attended his studies, the young composer, then only eleven years of age, dedicated his first sonatas to his benefactor.

Mayseder, the celebrated violinist (died at Vienna in 1863).

Meyer, Friedrich Sebastian, a singer (born 1773, died 1835), the husband of Mozart's eldest sister-in-law, who frequently, even in Beethoven's presence, made some boastful remark in praise of his deceased relative; such as "My brother-in-law would not have written that!."

Metronome, an instrument for measuring tune in music, invented about the year 1815 by Maelzel, of Vienna, and often employed and spoken of by Beethoven.

Milder-Hauptmann, Mdlle., the celebrated singer, first in Vienna and afterwards in Berlin.

Mödling, a village near Vienna, and Beethoven's favorite summer residence.

Mollo, music publisher in Vienna, afterwards the firm of Steiner & Co., and at a later period that of Haslinger.

Mölk, the celebrated abbey on the Danube.

Mölker Bastei, the, at Vienna, on several occasions Beethoven's residence in the house of Baron von Pasqualati (see also Schindler's "Biography," i. 187).

Moscheles.