Raaflaub studied German and history at the University of Basel; he earned a doctorate in 1975 in new Swiss history with a dissertation on the Swiss Protestant press. At the same time he trained to become a concert singer with Fritz Naf and studied music education and choral conducting at the Music Academy of Basel. He taught it at several schools, among others, at the High School on Cathedral Square. In 1976 he was appointed head of the music school in Muttenz near Basel.
Since 1979 he is head of the church choir St. Arbogast Muttenz and the Chamber Choir Zurich lowlands. With two choirs he has performed in all of Switzerland.
From 1983 to 2007 he was artistic director of the Beat Raaflaub Knabenkantorei Basel. With his choirs he can look back on numerous radio and TV recordings. Concert tours with the Knabenkantorei led him through Europe, the USA and South Africa and Brazil. Numerous CD recordings attest to his extensive work with the Knabenkantorei Basel.
As a conductor, instructor led courses Raaflaub at the music school of Basel. In addition, he hosted the music program regularly Sing with the Swiss Radio DRS, which was however discontinued for lack of listeners. As a member of the artistic advisory board of the European Youth Choir Festival in Basel, he had a major role in the musical presentation.
He is married to Marianne Kübler and father of four children.