By Katie Minard
September 17, 2015 at 09:19 PM EDT
Shirlaine Forrest/Getty Images for TAS

Taylor Swift has endorsed plenty of artists by welcoming them to the 1989 tour stage, but some artists have received another coveted Swift stamp of approval: an unsolicited tweet declaring her love of their music. From some of her BFFs, to relatively unknown acts, Swift doesn’t tire of recommending artists to her 63.6 million followers. Here are 21 who received glowing endorsements: