<Li> "Defying Gravity" (Album version)--3: 46 </Li> <P> Digital maxi single </P> <Ol> <Li> "Defying Gravity" (Tracy Young's Flying Monkey's Radio Edit)--3: 45 </Li> <Li> "Defying Gravity" (Eddie Baez Radio Edit)--4: 54 </Li> <Li> "Defying Gravity" (Funky Junction & Antony Reale Radio Edit)--4: 36 </Li> <Li> "Defying Gravity" (Hani Flying So High Short Mix)--4: 55 </Li> <Li> "Defying Gravity" (Josh Harris Radio Edit)--3: 53 </Li> </Ol> <Li> "Defying Gravity" (Tracy Young's Flying Monkey's Radio Edit)--3: 45 </Li>

What does defying gravity mean in the song