Title: Mean Old World
Content:  "Mean Old World" is a blues song recorded by American blues electric guitar musician T-Bone Walker in 1942. It has been described (along with the single's B-side) as "the first important blues recordings on the electric guitar". Over the years it has been interpreted and recorded by numerous blues, jazz and rock and roll artists.
Title: Mean Old World
Content:  In October 1952, Little Walter recorded his version of "Mean Old World" for Checker Records, a subsidiary of Chess Records. It was recast as a Chicago blues, with Walter's amplified harmonica prominently featured and several new lyrics substituted. The song was a hit, reaching number six on the Billboard R&B chart, where it remained for six weeks in 1953. Backing Little Walter are the Aces, with guitarists Louis and Dave Myers and drummer Fred Below. T-Bone Walker's Capitol version was released before Billboard magazine or a similar service began tracking such releases, so it is difficult to gauge which version was more popular. Little Walter received the sole credit for his recording.
Title: Mean Old World
Content:  T-Bone Walker began performing "Mean Old World" when he was with Les Hite and His Orchestra from 1939 to 1940. After leaving Hite's band, Walker continued to develop and refine his style on the Los Angeles club circuit. On July 20, 1942, he recorded "Mean Old World" for Capitol Records. The song was performed in the West Coast blues style, with a small combo of pianist Freddie Slack, bassist Jud DeNaut, and drummer Dave Coleman accompanying Walker on vocal and guitar. "Mean Old World" "showcased T-Bones's new, and already developed, style, in which he answered his smoky, soulful vocal phrases with deft, stinging, jazz-inflected lead lines on his 
Title: It's a Mean Old World to Try to Live In
Content:  It's a Mean Old World to Try to Live In is a 1975 gospel blues LP by American street-performing musician Reverend Pearly Brown (1915–86, vocals, guitar and harmonica, active in Macon, Georgia) on the Rounder label.
Title: His Best (Little Walter album)
Content:  Adapted from a 1942 T-Bone Walker song, "Mean Old World" became a #6 R&B chart success for Walter.
Title: Mean Old World
Content:  guitar". Capitol released the song in November 1945, with "I Got a Break, Baby", as the third disc in a five 10-inch record collection "The History of Jazz, Volume 3: Then Came Swing" (Capitol Criterion CE 18). Capitol later issued it as a single in 1947 (Capitol 15003). Because of a recording ban, T-Bone Walker did not record again until October 10, 1944, for the Rhumboogie label in Chicago. He recorded a variation on "Mean Old World", initially designated "T-Bone Blues No. 2". When Rhumboogie released it in 1946, it was retitled "Mean Old World Blues". It did not feature Walker's guitar as prominently (the backing group, 
Title: It's a Man's Man's Man's World
Content:  "It's a Man's Man's Man's World" is a song written by James Brown and Betty Jean Newsome. Brown recorded it on February 16, 1966, in a New York City studio and released it as a single later that year. It reached No. 1 on the Billboard R&B chart and No. 8 on the Billboard Hot 100. Its title is a word play on the 1963 comedy film It's a Mad, Mad, Mad, Mad World.
Title: You Mean the World to Me (David Houston song)
Content:  "You Mean the World to Me" is a song written by Billy Sherrill and Glenn Sutton, and recorded by American country music artist David Houston. It was released in August 1967 as the first single and title track from the album You Mean the World to Me. The song was Houston's third number one on the country charts as a solo artist. The single spent two weeks at number one and a total of sixteen weeks on the chart.
Title: Song for the Old World
Content:  Song for the Old World is an album by pianist and composer Anthony Davis recorded in 1978 for the India Navigation label.
Title: Mean Old Man
Content:  Mean Old Man is the 40th studio album by rock and roll pioneer Jerry Lee Lewis. Like his previous album Last Man Standing, this album features duets with famous artists.

Question: who sang it's a mean old world?
Answer: T-Bone Walker.