Singing songs is correlated with the greatest reading achievement in the shortest amount of time with the most enjoyment of any intervention strategy available for struggling readers! 

Singing builds language retention, automaticity, vocabulary and fluency.

TUNEin to READING
In an accidental discovery it was found that students using a software program at home to improve their singing accuracy made surprisingly dramatic gains in reading achievement. After researching the effect, the company Electronic Learning Products developed TUNEin to READING to use singing as an intervention for struggling readers. 
News Video.  Teacher video.  Researcher video.  

After years of studies of over 1400 students funded by the Florida Department of Education and JustRead!, the average gain was 1.2 years of reading achievement in 9 weeks--singing three times a week for 30 minutes. The gains were also reflected in the students' scores on the FL state comprehensive tests compared with their peers who did not receive TiR practice. Schools and districts across the country are using TiR for struggling readers.