Hear Sparks Set Off “A Steady Drip, Drip, Drip” Sparks remain one of the quirkier sibling pop duos. Their new album showcases the infectious hooks the Mael brothers are known for. See Ain’t No Stoppin’ Us Now: TSOP Goes Animated? TSOP — or “The Sound of Philadelphia” — is classic for a reason. Now, the music may be showing up in an all-new animated series.