He recorded his songs in a studio and then he put it in the show.
Johnny Cash (apex)
The Johnny Cash Show - album - was created in 1970-10.
The Johnny Cash Show - 1969 - 1.12 was released on: USA: 30 August 1969
The Johnny Cash Show - 1969 - 2.23 was released on: USA: 10 March 1971
The Johnny Cash Show - 1969 - 1.29 was released on: USA: 22 April 1970
Johnny Cash (apex)
The Johnny Cash Show - 1969 The Johnny Cash Christmas Show 2-13 was released on: USA: 25 December 1970
The Johnny Cash Show - album - was created in 1970-10.
Yeah, he even got his own show : The Johnny Cash show.
The Johnny Cash Show - TV series - was created in 1969.
The Johnny Cash Show - 1969 was released on: USA: 7 June 1969
The Johnny Cash Show - 1969 - 2.14 was released on: USA: 6 January 1971
The Johnny Cash Show - 1969 - 1.10 was released on: USA: 16 August 1969
The Johnny Cash Show - 1969 - 1.11 was released on: USA: 23 August 1969
The Johnny Cash Show - 1969 - 1.13 was released on: USA: 6 September 1969
The Johnny Cash Show - 1969 - 1.14 was released on: USA: 20 September 1969
The Johnny Cash Show - 1969 - 1.16 was released on: USA: 21 January 1970