The Kenton orchestra had been on a slow decline in sales and popularity in the late 1950s with having to compete with newer, popular music artists such as Elvis Presley, Bobby Darin and The Platters.
The nadir of this decline was around 1958 and coincided with a recession that was affecting the entire country.
There were far fewer big bands on the road and live music venues were hard to book for the Kenton orchestra.
The band would end 1959 beaten up by poor attendance at concerts and having to rely far more on dance halls than real jazz concerts.
 The band would reform in 1960 with a new look, a new sound, a larger group with a 'mellophonium' section added and an upsurge in Kenton's popularity.

The new instrument was used by Kenton to "bridge the gap" in range, color, and tonality between his trumpet and trombone sections.
Essentially it creates a conical, midrange sound that is common in a symphonic setting with a horn (French horn) but the bell of the instrument faces forward.
Kenton's 1961 recording The Romantic Approach for Capitol is the first of 11 LPs that would feature the "mellophonium band".
Kenton arranged the whole first mellophonium album himself and it was very well received in a September 1961 review in Down Beat.

The Kenton Orchestra from 1960 to 1963 had numerous successes; the band had a relentless recording schedule.
The albums Kenton's West Side Story (arrangements by Johnny Richards) and Adventures In Jazz, each won Grammy awards in 1962 and 1963 respectively.
Ralph Carmichael wrote a superb set of Christmas charts for Kenton which translated into one of the most popular recordings from the band leader to date: A Merry Christmas!.
  Also, Johnny Richards' Adventures in Time suite (recorded in 1962) was the culmination of all things the mellophonium band was capable of.
  After the Fall 1963 U.S./U.K. tour ended in November, the mellophonium incarnation of Kenton bands was done.
The conditions of Stan's divorce from jazz singer Ann Richards was that a judge ordered Stan to take a year off the road to help raise their two children or lose custody all together.
Kenton would not reform another road band for tour until 1965.
 
Kenton had ties from earlier writing of country/western songs that were a success with Capitol and again he tried his hand in that genre during the early 1960s.
In a music market that was becoming increasingly tight, in 1962 he cut the hit single "Mama Sang a Song"; his last Top-40 (No.
 32 Billboard, No.
 22 Music Vendor).
The song was a narration written by country singer Bill Anderson and spoken by Kenton.
The single also received a Grammy nomination the following year in the Best Documentary or Spoken Word Recording category.
The other attempt he made into that market was the far less successful Stan Kenton!
Tex Ritter!,
released in 1962 as a full LP.

After the breakup of the mellophonium band, Kenton / Wagner (1964) was an important recording project that Kenton arranged himself, again moving towards "progressive jazz" or third stream music.
This album was not a financial success but kept Kenton at the forefront of 'art music' interpretation in the commercial music world.
Stan Kenton Conducts the Los Angeles Neophonic Orchestra (1965) was an artistic success that garnered another Grammy nomination for the band leader.
 During this time Kenton also co-wrote the theme music for the short lived NBC television series Mister Roberts (1965–66).

The 1966–1969 Capitol releases for Stan Kenton were a severe low point for his recording career.
Capitol producer Lee Gillette was trying to exploit the money making possibilities of numerous popular hits to include the 1968 musical Hair featuring contemporary rock music.
  Due to lack of promotion by Capitol, four LPs were financial failures; this would be the last releases for Kenton under the aegis of long time Kenton producer Lee Gillette and Capitol.
  In fact, by the time it was recorded Kenton had no involvement in the Hair LP except for Kenton's name placed on the jacket cover; Ralph Carmichael and Lennie Niehaus were placed in charge o
The Kenton orchestra had been on a slow decline in sales and popularity in the late 1950s with having to compete with newer, popular music artists such as Elvis Presley, Bobby Darin and The Platters. The nadir of this decline was around 1958 and coincided with a recession that was affecting the entire country. There were far fewer big bands on the road and live music venues were hard to book for the Kenton orchestra. The band would end 1959 beaten up by poor attendance at concerts and having to rely far more on dance halls than real jazz concerts.  The band would reform in 1960 with a new look, a new sound, a larger group with a 'mellophonium' section added and an upsurge in Kenton's popularity.
The new instrument was used by Kenton to "bridge the gap" in range, color, and tonality between his trumpet and trombone sections. Essentially it creates a conical, midrange sound that is common in a symphonic setting with a horn (French horn) but the bell of the instrument faces forward. Kenton's 1961 recording The Romantic Approach for Capitol is the first of 11 LPs that would feature the "mellophonium band". Kenton arranged the whole first mellophonium album himself and it was very well received in a September 1961 review in Down Beat.
The Kenton Orchestra from 1960 to 1963 had numerous successes; the band had a relentless recording schedule. The albums Kenton's West Side Story (arrangements by Johnny Richards) and Adventures In Jazz, each won Grammy awards in 1962 and 1963 respectively. Ralph Carmichael wrote a superb set of Christmas charts for Kenton which translated into one of the most popular recordings from the band leader to date: A Merry Christmas!.   Also, Johnny Richards' Adventures in Time suite (recorded in 1962) was the culmination of all things the mellophonium band was capable of.   After the Fall 1963 U.S./U.K. tour ended in November, the mellophonium incarnation of Kenton bands was done. The conditions of Stan's divorce from jazz singer Ann Richards was that a judge ordered Stan to take a year off the road to help raise their two children or lose custody all together. Kenton would not reform another road band for tour until 1965.  
Kenton had ties from earlier writing of country/western songs that were a success with Capitol and again he tried his hand in that genre during the early 1960s. In a music market that was becoming increasingly tight, in 1962 he cut the hit single "Mama Sang a Song"; his last Top-40 (No. 32 Billboard, No. 22 Music Vendor). The song was a narration written by country singer Bill Anderson and spoken by Kenton. The single also received a Grammy nomination the following year in the Best Documentary or Spoken Word Recording category. The other attempt he made into that market was the far less successful Stan Kenton! Tex Ritter!, released in 1962 as a full LP.
After the breakup of the mellophonium band, Kenton / Wagner (1964) was an important recording project that Kenton arranged himself, again moving towards "progressive jazz" or third stream music. This album was not a financial success but kept Kenton at the forefront of 'art music' interpretation in the commercial music world. Stan Kenton Conducts the Los Angeles Neophonic Orchestra (1965) was an artistic success that garnered another Grammy nomination for the band leader.  During this time Kenton also co-wrote the theme music for the short lived NBC television series Mister Roberts (1965–66).
The 1966–1969 Capitol releases for Stan Kenton were a severe low point for his recording career. Capitol producer Lee Gillette was trying to exploit the money making possibilities of numerous popular hits to include the 1968 musical Hair featuring contemporary rock music.   Due to lack of promotion by Capitol, four LPs were financial failures; this would be the last releases for Kenton under the aegis of long time Kenton producer Lee Gillette and Capitol.   In fact, by the time it was recorded Kenton had no involvement in the Hair LP except for Kenton's name placed on the jacket cover; Ralph Carmichael and Lennie Niehaus were placed in charge o
Stan Kenton