TINA MAY is certainly a slow burner. In an unusually chilly Royal Clifton ballroom, she took a while to find her fire, but once she warmed up she was as hot. Looking gorgeous, with a voice to make grown men swoon, she is a charismatic and skilled vocalist. But arriving directly from Paris perhaps left her a little lagged and in early songs, such as Thelonious Monk’s "Well You Needn’t," this reviewer had the feeling that Tina and the band were holding back. Tenor sax and band leader Mike