### Clue: Song and dance singer recalled chart success in Love (9)
### Answer: ADORATION 
 ### Explanation: Definition: Love
 ADO(a song and dance/an unnecessary fuss) + RAT(an informant/a singer betraying his/her associates) + **reversal of**(recalled) [NO.I](abbrev. for Number One, the most successful number in the popular music chart, with the Roman numeral substitution)].