Neither Katy Perry's "This is How We Do" nor Vance Joy's "Riptide" lights up Hot AC radio this week.

Katy Perry’s “This is How We Do” might be off to a solid start at pop radio, but its initial welcome at the Hot Adult Contemporary format was far from warm.

According to Mediabase, “This is How We Do” landed at just four monitored stations in conjunction with its impact this week. A surprisingly low total for a Katy Perry release — or really any medium- or high-profile launch — it was not even enough to render “This is How We Do” as one of the format’s ten most-added songs this week.

Vance Joy’s crossover attempt “Riptide,” which recently reached #1 on Mediabase’s alternative chart, Billboard’s rock airplay chart and Billboard’s alternative airplay chart, also got off to a slow start. Like the Perry song, it received pickups from just four Hot AC stations in conjunction with its impact.

Leading the charge this week were strong holdover efforts from Meghan Trainor (“All About That Bass”), Colbie Caillat (“Try”), Echosmith (“Cool Kids”) and Jessie J + Ariana Grande + Nicki Minaj (“Bang Bang”). The songs, which were the four most-added hot AC tracks, landed at 20, 15, 14 and 14 respective new stations.