Question: The first measurable hit was performned by who in 1951?
About the article "Santa Claus Is Coming to Town", section "Recordings".

Candidate passages:
The phrase "formula_7 is bimeasurable" means that, first, formula_7 is measurable (that is, the preimage formula_9 is measurable for every measurable formula_10), and second, the image formula_11 is measurable for every measurable formula_12.
(Thus, formula_13 must be a measurable subset of formula_14 not necessarily the whole formula_15)An isomorphism (between two measurable spaces) is, by definition, a bimeasurable bijection.
If it exists, these measurable spaces are called isomorphic. 
"Kisses Sweeter than Wine" is a popular love song written by The Weavers in 1950.
The song was a hit for Jimmie Rodgers in 1957 and Frankie Vaughan in 1958.
The song was first recorded by The Weavers, who released the song as a Decca single in 1951, as Decca 9-27670.
The recording by The Weavers reached #19 on the "Billboard" chart and #20 on the "Cashbox" chart in 1951. 
"Vanity" is a popular song.
The music was written by Guy Wood, the lyrics by Jack Manus and Bernard Bierman.
The song was published in 1951.
It had some success on the charts, reaching the top 20, in 1951 and was recorded by Don Cherry, who had recorded the hit version, for his 1968 album, "There Goes My Everything."
The original 1951 recording by Don Cherry was released by Decca Records as catalog number 27618.
It first reached the Billboard magazine Best Seller chart on July 20, 1951 and lasted 11 weeks on the chart, peaking at #17. 
Let "T" be an ordered index set such as the natural numbers, N, the non-negative real numbers, or a subset of these; elements "t" ∈ "T" can be thought of as "times".
Given a probability space (Ω, Σ, Pr) and a measurable state space "S", let "X" : Ω × "T" → "S" be a stochastic process, and let "A" be a measurable subset of the state space "S".
Then the first hit time "τ""A" : Ω → [0, +∞ is the random variable defined by formula_1 The first exit time (from "A") is defined to be the first hit time for "S" \ "A", the complement of "A" in "S".
Confusingly, this is also often denoted by "τ""A" (e.g.
in Øksendal (2003)).
The first return time is defined to be the first hit time for the singleton set { "X"0("ω") }, which is usually a given deterministic element of the state space, such as the origin of the coordinate system. 
A cardinal κ is called real-valued measurable if there is a κ-additive probability measure on the power set of κ which vanishes on singletons.
Real-valued measurable cardinals were introduced by .
showed that the continuum hypothesis implies that formula_1 is not real-valued measurable.
showed that real valued measurable cardinals are weakly inaccessible (they are in fact weakly Mahlo).
All measurable cardinals are real-valued measurable, and a real-valued measurable cardinal κ is measurable if and only if κ is greater than formula_1.
Thus a cardinal is measurable if and only if it is real-valued measurable and strongly inaccessible.
A real valued measurable cardinal less than or equal to formula_1 exists if and only if there is a countably additive extension of the Lebesgue measure to all sets of real numbers if and only if there is an atomless probability measure on the power set of some non-empty set..