VIDEO : Avril Lavigne and Chad Kroeger Make Music Together After Splitting Up

Avril Lavigne and Chad Kroeger have been working on new music together. Avril posted a picture of Chad holding a guitar on her Instagram and wrote: "Back where it all started ... (sic)" She captioned another picture: "YeeHaw! Writing with Chad today (sic)." The 31-year-old singer appears to have maintained a good relationship with her former husband, following her announcement the pair have split but plan to remain "the best of friends". It was recently claimed the pair didn't "see eye to eye".