Despite the steady flow of hit singles, tensions between Spector and the Crystals mounted. Already unhappy with having been replaced by Love and the Blossoms on two singles, the Crystals were even more upset when Spector began focusing much of his time on his other girl group the Ronettes. Not only did the Ronettes become Philles Records' priority act, the Ronettes actually replaced the Crystals on four album tracks on the 1963 compilation LP "The Crystals Sing the Greatest Hits". As well, there were disputes about royalties, with the Crystals feeling that Spector was withholding royalty money that was owed to them.