Hi there. Ive just noticed that every now and again when I play music through Bluetooth that it detunes if the signal gets weak, then when the signal gets stronger it tunes back up to where it should be. I have an iPhone 6, playing music with Apple music through to a Bose Mini Soundlink. Now I'm wondering if this is a common Bluetooth problem or if it's something my phone / Apple music is doing. This happens with music stored on my phone and when streaming. Have people experienced this with Apple Music even through headphones? As a sound engineer this frustrates me when I'm listening back to mixes as I think it could be a problem with the song but no. Cheers for any help.