It's What's Happenin' (subtitled The Varitone Sound of Clark Terry) is an album by American jazz trumpeter Clark Terry featuring performances recorded in 1967 for the Impulse! label.[1][2]  Remastered in 2012 to commemorate the 50th anniversary of Impulse! Records, it was reissued together with Terry's only other record for the label as a solo leader, The Happy Horns of Clark Terry.[3]
Reception
The Allmusic review by Richard S. Ginell awarded the album 3 stars stating "Not many will bother to recall that Clark Terry was the first trumpeter to make a recording with Selmer's Varitone attachment -- an electronic hookup to an amplifier that allowed a horn player to play octaves. Though the instrument quickly fell out of favor after a very brief vogue, it still produced an attractively soulful sound that was a good fit with Terry's jaunty, slurry, note-bending manner... there is nothing unmusically sensational about anything that happens here.".[4]  
Professional ratings| Review scores | 
|---|
| Source | Rating | 
|---|
| Allmusic |      [4] | 
Track listing
All compositions by Clark Terry except where noted.
- "Electric Mumbles" - 3:51
 
- "Secret Love" (Paul Francis Webster, Sammy Fain) - 6:15
 
- "Take Me Back to Elkhart" - 7:11
 
- "Take the "A" Train" (Billy Strayhorn) - 5:03
 
- "Tee Pee Time" - 6:25
 
- "Grand Canyon Suite" (Ferde Grofé) - 7:05
 
Personnel
References
 | 
|---|
Years given are for the recording(s), not first release.  | 
As leader or co-leader |  | 
|---|
With Duke Ellington |  | 
|---|
With Johnny Hodges |  | 
|---|
With Quincy Jones |  | 
|---|
With Herbie Mann |  | 
|---|
With Oliver Nelson |  | 
|---|
With others | 
- My Kinda Swing (Ernestine Anderson, 1959)
 
- Gloomy Sunday and Other Bright Moments (Bob Brookmeyer, 1961)
 
- Soul Summit Vol. 2 (Gene Ammons, 1961)
 
- Late Hour Special (Gene Ammons, 1961–62)
 
- Velvet Soul (Gene Ammons, 1962)
 
- One Foot in the Gutter (Dave Bailey, 1960)
 
- Gettin' Into Somethin' (Dave Bailey, 1960)
 
- Goodies (George Benson, 1968)
 
- Bobo's Beat (Willie Bobo, 1968)
 
- Jam Session (Clifford Brown, 1954)
 
- Ruth Brown '65 (Ruth Brown, 1964)
 
- Who Is Gary Burton? (1962)
 
- Byrd at the Gate (Charlie Byrd, 1963)
 
- Son of Drum Suite (Al Cohn, 1960)
 
- The Magic Touch (Tadd Dameron, 1962)
 
- Afro-Jaws (Eddie "Lockjaw" Davis, 1960)
 
- Trane Whistle (Eddie "Lockjaw" Davis, 1960)
 
- Listen to Art Farmer and the Orchestra (1962)
 
- Ella Abraça Jobim (Ella Fitzgerald, 1980–81)
 
- Big Band Bossa Nova (Stan Getz, 1962)
 
- Stan Getz Plays Music from the Soundtrack of Mickey One (1965)
 
- Gillespiana (Dizzy Gillespie, 1960)
 
- Carnegie Hall Concert (Dizzy Gillespie, 1961)
 
- Cookin' (Paul Gonsalves, 1957)
 
- The Big Soul-Band (Johnny Griffin, 1960)
 
- White Gardenia (Johnny Griffin, 1961)
 
- Homage to Duke (Dave Grusin, 1993)
 
- The Further Adventures of El Chico (Chico Hamilton, 1966)
 
- It's About Time (Jimmy Hamilton, 1961)
 
- You Better Know It!!! (Lionel Hampton, 1964)
 
- Really Big! (Jimmy Heath, 1960)
 
- Friends Old and New (John Hicks, 1992)
 
- Yoyogi National Stadium, Tokyo 1983: Return to Happiness (JATP, 1983)
 
- Budd Johnson and the Four Brass Giants (1960)
 
- J.J.! (J.J. Johnson, 1964)
 
- Goodies (J.J. Johnson, 1965)
 
- Concepts in Blue (J.J. Johnson, 1980)
 
- Summit Meeting (Elvin Jones, 1977)
 
- Down Home (Sam Jones, 1962)
 
- At Newport '63 (Lambert, Hendricks & Bavan, 1963)
 
- The Centaur and the Phoenix (Yusef Lateef, 1960)
 
- Themes from Mr. Lucky, The Untouchables and Other TV Action Jazz (Mundell Lowe, 1960)
 
- Satan in High Heels (Mundell Lowe, 1961)
 
- The Soul of Hollywood (Junior Mance, 1962)
 
- The Jazz Version of "How to Succeed in Business without Really Trying" (Gary McFarland, 1961)
 
- Tijuana Jazz (Gary McFarland, 1965)
 
- Mingus Revisited/Pre-Bird (Charles Mingus, 1960)
 
- The Complete Town Hall Concert (Charles Mingus, 1962)
 
- Smooth as the Wind (Blue Mitchell, 1960–61)
 
- A Sure Thing (Blue Mitchell, 1962)
 
- Jazz Dialogue (Modern Jazz Quartet, 1965)
 
- Gerry Mulligan and the Concert Jazz Band at the Village Vanguard (1960)
 
- Gerry Mulligan '63 (Gerry Mulligan, 1962)
 
- That's How I Love the Blues! (Mark Murphy, 1962)
 
- Nine Flags (Chico O'Farrill, 1966)
 
- Oscar Peterson and the Trumpet Kings – Jousts (1974)
 
- The Alternate Blues (Oscar Peterson, 1980)
 
- The Trumpet Summit Meets the Oscar Peterson Big 4 (1980)
 
- Basically Duke (Oscar Pettiford, 1954)
 
- The Trumpet Kings Meet Joe Turner (Big Joe Turner, 1974)
 
- Bossa Nova Carnival (Dave Pike, 1962)
 
- Jazz for the Jet Set (Dave Pike, 1965)
 
- Sonny Rollins and the Big Brass (1958)
 
- New Fantasy (Lalo Schifrin, 1964)
 
- Once a Thief and Other Themes (Lalo Schifrin, 1965)
 
- Hobo Flats (Jimmy Smith, 1963)
 
- The Matadors Meet the Bull (Sonny Stitt, 1965)
 
- I Keep Comin' Back! (Sonny Stitt, 1966)
 
- Taylor Made Jazz (Billy Taylor, 1959)
 
- New York City R&B (Cecil Taylor, 1961)
 
- Kwamina (Billy Taylor, 1961)
 
- Out of the Storm (Ed Thigpen, 1966)
 
- Devil May Care (Teri Thornton, 1960–61)
 
- Joyride (Stanley Turrentine, 1965)
 
- Live at Newport (McCoy Tyner, 1963)
 
- Dinah Jams (Dinah Washington, 1954)
 
- Uhuru Afrika (Randy Weston, 1960)
 
- At Newport '63 (with Joe Williams, 1963)
 
- New York, New Sound (Gerald Wilson, 2003)
 
- Kai Olé (Kai Winding, 1961)
 
- The Colorful Strings of Jimmy Woode (Jimmy Woode, 1957)
  
  | 
|---|