Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: The relevant information to answer the above question is: "Gloria" is a song written by Northern Irish singer-songwriter Van Morrison and originally recorded by Morrison's band Them in 1964 and released as the B-side of "Baby, Please Do n't Go".
The question and answer:
"Gloria" is a song written by Northern Irish singer-songwriter Van Morrison and originally recorded by Morrison's band Them in 1964 and released as the B-side of "Baby, Please Do n't Go". The song became a garage rock staple and a part of many rock bands' repertoires. It is particularly memorable for its "Gloria!" chorus. It is easy to play, as a simple three-chord song, and thus is popular with those learning to play guitar.

Who sang the song gloria in the 1960s?
The answer is Them