The Hammond organ is an electric organ invented by Laurens Hammond in 1934 and manufactured by the Hammond Organ Company. While the Hammond organ was originally sold to churches as a lower-cost alternative to the wind-driven pipe organ, in the 1960s and 1970s it became a standard keyboard instrument for jazz, blues, rock, church and gospel music.

The original Hammond organ used additive synthesis of waveforms from harmonic series made by mechanical tonewheels that rotate in front of electromagnetic pickups. The component waveform ratios are mixed by sliding drawbars mounted above the two keyboards. Although many different models of Hammond organs were produced, the Hammond B-3 organ is most well known. In the late 1960s and throughout the 1970s the distinctive sound of the B-3 organ (often played through a Leslie speaker) was widely used in blues, progressive rock bands and blues-rock groups. The last electromechanical Hammond organ came off the assembly line in the mid-1970s.

In 1897 Thaddeus Cahill patented an instrument called the Telharmonium (or Teleharmonium, also known as the Dynamaphone). Using tonewheels to generate musical sounds as electrical signals by additive synthesis, it was capable of producing any combination of notes and overtones, at any dynamic level. This technology was later used to design the Hammond organ.

B3, B03, B.III or B-3 may refer to:

and also :

Joey DeFrancesco (born April 10, 1971) is an American jazz organist, trumpeter, and vocalist. Down Beat's Critics and Readers Poll selected him as the top jazz organist every year since 2003.

DeFrancesco was born in Springfield, Pennsylvania. His grandfather was multi-instrumentalist Joe DeFrancesco, of Italian descent; his father is Hammond B3 player "Papa" John DeFrancesco, who took his son to jazz clubs from the age of seven. Joey DeFrancesco started playing the piano at the age of four,switching to the B3 shortly after. By age six, he was sitting in on his father's gigs. By age ten, he was enrolled in the Settlement Music School Jazz Band. Under the direction of Lovett Hines, he learned and performed with the Jazz Band with the likes of saxophonist Robert Landham, drummer Kevin Outterbride, bassist Leonard Richardson Sr. and guitarist Kelvin McDaniel, playing out on his own, as well as sitting in with organ legends like Jack McDuff and Richard "Groove" Holmes. DeFrancesco went to high school with bassist Christian McBride, where the two were often scolded for altering their big band charts. While in High school, he was also in a local jazz trio called Strictly Business with drummer Leon Jordon Sr. and bassist Leonard Richardson Sr..

Barbara Dennerlein (born 25 September 1964 in Munich, Germany), is a hard bop and post-bop Hammond B3 organist.

At age 11, Dennerlein began playing electronic organ. After starting organ lessons, she learned to play the two manual organ with a bass pedalboard. After one and a half years of lessons she continued to study without formal instruction. At age 15, she played in a jazz club for the first time. When leading her own bands, Dennerlein was often the youngest musician in the group, and she learned to cooperate with more experienced musicians. Her local reputation as the "Organ tornado from Munich" spread after her first TV appearances in 1982.

When her third LP Bebab was issued, Dennerlein established her own record label in 1985. She received two German Record Critics' awards for self-produced albums.. Later, she made three recordings for Enja Records and three for Verve Records. On these recordings she worked with Ray Anderson, Randy Brecker, Dennis Chambers, Roy Hargrove, Mitch Watkins, and Jeff 'Tain' Watts.

Lonnie Smith (born December 22, 1955 in Chicago, Illinois) is a former Major League Baseball outfielder. He made his debut for the Philadelphia Phillies on September 2, 1978 and later played for the St. Louis Cardinals, Kansas City Royals, Atlanta Braves, Pittsburgh Pirates, and Baltimore Orioles. He overcame bouts with drug abuse to become one of the top base-stealers in baseball during the decade of the 1980s(7th). He played on five pennant-winning teams, three of which won the World Series.

After brief trials with the Phillies in 1978 and 1979, Smith broke into the team's lineup in 1980, batting .339 in 100 games. The Phillies won the National League pennant and defeated the Kansas City Royals in the World Series. Smith's performance was strong enough for him to finish third in the Rookie of the Year balloting following the season. He continued to play well in the strike-shortened 1981 season, hitting .324.

He was traded to the St. Louis Cardinals in November 1981. Smith continued to hit well in 1982, and to have a good on-base percentage. In fact, 1982 was a high-water year for Smith in several different ways: Smith was in the MLB All-Star Game for the only time in his career in 1982. He had a batting average of .307, and on-base percentage of .381. He led the National League with 120 runs scored, which was the only time that he scored 100+ runs in a season during his baseball career. Smith also set career highs in 1982 with 592 at-bats, 182 hits, 35 doubles, and 257 total bases during the regular season. He also ranked second in the National league with a career-high 68 stolen bases on the basepaths, but he was also caught stealing a career-high 26 times, since the Cardinals' manager had ordered his fastest players to attempt to steal bases whenever possible as part of his strategy for winning.