In singing, there is a quality so essential that without it singing as we know it would not exist. Legato. Now, “legato” is the past participle of the Italian infinitive “legare,” to tie, or to connect. Here is the problem. Anybody can link two notes together. The devil is in the details, the how of that linking. Beware, said Lamperti, of “strisciato” that form of legato in which notes are smeared. A smeared and false legato is one of the most common and most egregious vocal faults. Sing a phrase as a reference. Now, take the words of that phrase and chuckle each syllable singly and separately as though to your self. Let the words bubble up from within. Return to the phrase in question. Is it better? If so you’ve made a great discovery. If not, that’s a discovery too.