The hit Fox show premiered two original tracks, titled 'Loser Like Me' and 'Get It Right', last month, which went on to reach number six and 16 on the US Hot 100 singles chart respectively.
Stringer, who helped show creator Ryan Murphy develop the series, has now explained to Music Week that more original songs are to come. He said: "There will definitely be new songs going forward, although not every week.
"We will spread the net as wide as we can as we go on to find people who are suitable to write songs for certain characters."
It was recently reported that Gwyneth Paltrow will reprise her role as Holly Holliday for a third time this season and is due to perform an Adele cover.
Glee returns in the US on April 19 at 8/7c on Fox. The show continues in the UK on Mondays at 9pm on E4.
Listen to 'Loser Like Me' below: