What You Don't Know (Exposé song)

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"What You Don't Know"
Single by Exposé
from the album What You Don't Know
B-side "Walk Along with Me"
Released May 20, 1989
Format 7", 12"
Recorded 1988-1989
Genre Freestyle
Length 4:46 (Album version)
4:08 (Radio Mix)
Label Arista
Songwriter(s) Lewis Martineé
Producer(s) Lewis Martineé
Exposé singles chronology
"Seasons Change"
"What You Don't Know"
"When I Looked at Him"
"Seasons Change"
"What You Don't Know"
"When I Looked at Him"

"What You Don't Know" is a 1989 song by the American girl group Exposé. It was written and produced by the group's founder, Lewis Martineé, and appears on Exposé's second album, What You Don't Know. Lead vocals on "What You Don't Know" were performed by Gioia Bruno.


Taken as the first single from the album, the song peaked at #8 on the Billboard Hot 100 chart in July 1989, extending the group's streak of consecutive top ten U.S. pop hits to five.[1] On the Billboard dance music charts, the song reached #2 on the Hot Dance Club Play chart[2] and #8 on the Hot Dance Singles Sales charts. It was the first single by the group to be certified Gold by the U.S. RIAA.[1] In the United Kingdom, the song eked out two weeks at #99 on the UK Singles Chart in September 1989.[3]

Music video[edit]

The music video features the group rehearsing with a band on stage, then near the end of the video the women rush back to be with their boyfriends.


The song features a prominent horn section accompanying the singers, and there is a guitar solo between the second and third verses. Although the group continued to have success on the dance charts, this was one of the final Exposé pop hits featuring a beat, with which they had become associated from most of the singles off their previous album, Exposure. Many of the pop songs released by the group from this point on were mid-tempo or tunes.

Track listing[edit]

U.S. single (vinyl and cassette)[edit]

A "What You Don't Know" (3:58)
B "Walk Along with Me" (3:49)

U.S. 12" single[edit]

A1 "What You Don't Know" Atomic Mix (6:35)
A2 "What You Don't Know" Might Hurt You Beats (2:36)
A3 "What You Don't Know" Radio Mix (4:10)
B1 "What You Don't Know" Bass Mix (7:09)
B2 "What You Don't Know" Crossover Mix (6:36)


  1. ^ a b Whitburn, Joel (2004). The Billboard Book of Top 40 Hits, 8th Edition (Billboard Publications), page 215.
  2. ^ Whitburn, Joel (2004). Hot Dance/Disco 1974-2003, (Record Research Inc.), page 94.
  3. ^ UK Singles Chart info Chartstats.com. Retrieved 18 May 2009.

External links[edit]