"Say You Will" is a song by British-American rock band Foreigner. It was the first single released from the album Inside Information (1987), and was co-written by Lou Gramm and Mick Jones (See 1987 in music). The single reached #6 on the Billboard Hot 100 and became their fourth #1 hit on the Billboard Hot Mainstream Rock Tracks chart, holding the top spot for four weeks, starting on December 19, 1987.

"Say You Will" was one of Foreigner's last two Top 10 chart hits in the United States, followed by the 1988 release of the single "I Don't Want to Live Without You" (which reached #5 on the Hot 100 chart). The song also became the band's third-highest charting hit in Germany, where it reached #22, faring even better in Switzerland, the Netherlands, and particularly Norway, where it reached #4. The video clip for this song, directed by David Fincher, reached #1 on MTV's Top Twenty chart in February 1988.

Allmusic noted that the single was a "good example" of the band's "balancing act" as "the guitar-heavy style of their early work gave way to slick arrangements that pushed electronics to the fore...temper(ing) its rock guitar edge...and Lou Gramm's quasi-operatic vocals...by thick layers of chiming synthesizers and an array of electronic textures."

...
Wikipedia