American born Johnna (full name Johnna Lee Cummings) was lead singer in the short lived Stock Aitken & Waterman produced Girl group 'Boy Krazy' (sometimes spelt as Boykrazy). Boy Krazy were formed in 1991. The Girls had one big hit (#18 in Billboard Hot 100 Charts) in the US with 'That's What Love Can Do' back in 1993. A different mix of the song had been released in 1991 in The UK and had got to #83 in the UK singles charts. After one self-titled album released in 1993 the group disbanded in 1994.