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Happy? briefly entered the UK Albums Chart, where it stayed for 2 weeks and reached No. 40 on 26 September 1987.
The single “Seattle” entered the UK Singles Chart, where it stayed for 4 weeks and reached No. 47 on 22 August 1987.
The single “The Body” peaked at No. 100 on the Single Charts.
United States
Happy? entered the Billboard 200, where it stayed for 10 weeks and reached No. 169 on 7 November 1987.
The single “Seattle” was released as a promo 12-inch single which entered the Billboard Hot Dance Club Play Songs charts, where it stayed for 7 weeks and reached No. 30 on 26 December 1987.
The single “Body” was released as a promo 12-inch single in early February 1988, but did not chart.
References
Cocatalog.loc.gov United States Copyright Office website