To truly master the piano, one must practice tapping keys for thousands of hours, which is why Mozart and Beethoven were also the world's most prominent Morse-code operators. Appreciate the finger-tapping arts with today's Groupon: for $12, you get one adult ticket to the Mendelssohn Performing Arts Center's piano concert on May 6 at Court Street United Methodist Church (a $25 value), featuring Angela Cheng and Alvin and Alan Chow . Seating is first come, first served.

As one of the oldest continuous community music organizations in the United States, the Mendelssohn Performing Arts Center has sponsored live music performances in Rockford since the Romantic Era and is currently in its 126th season. With this deal, you'll massage ear drums with a performance from ivory-tickling twins Alan and Alvin Chow, joined by Alan's wife, Canadian concert pianist Angela Cheng. Winner of a Competition Gold Medal at the 1986 Arthur Rubinstein International Piano Master Competition, Cheng will fill the pulpit with classic sermons such as Mozart's Piano Sonata in C major and Ravel's La Valse. With three pairs of deftly plucking digits, the trio will perform intricate pieces for up to six hands on the same piano, a difficult feat first attempted by half-man, half-octopus Franz Squidbert.