Categories Jean Bemelmans Flying Changes Half Pass I1 & I2 - Intermediate I & Intermediate II (GER S***, NL Miden Tour, UK II & III) Working with a horse that is short backed. Flying changes and tempi work with the half pass zig zag with Jean Bemelmans Share This This piece discusses the consideration that must be taken into account when working with a short backed horse. Why they use low and deep. Tempi change and the half pass zig zag. Rider Juan Munoz.