Here you can listen to and download the Let Me Know (feat. Future) ringtone for free. Artist: Tamar Braxton. You can choose from 8 versions between 12 and 49 seconds. Tags: r&b, slow and pop. Click a tag below to see more ringtones like this. Android users need the .MP3 file, iPhone users need the .M4R file. Both are free. All ringtones by Tamar Braxton are collected on the artist page.