“The thing that really caught my attention was the fact that it was about sisters,” Este Haim explains. The Grammy-nominated artist is speaking of the new Netflix romantic comedy, Voicemails for Isabelle , which leans heavily into the bond of sisters. If anyone knows about sisterhood, it’s surely Haim, who’s spent her entire professional career singing to hoards of fans alongside her own sisters. Haim and Amanda Yamate co-scored the film , set to drop on Netflix Friday (June 19). The collaborators join The Hollywood Reporter on a video call to discuss the Leah McKendrick-directed film, their latest project with the streamer. “When we all watched it with Leah for the first time, we pretty much all just turned to each other and agreed this requires a love theme,” Yamate says of the film’s most vital relationship, which is not the one viewers might expect. In Voicemails For Isabelle , Zoey Deutch plays Jill, who starts recounting her life adventures to her beloved sister that recently passed.…