The Rennas made "Hail Mary" available on April 15, 2014. With Hail Mary being less than two minutes long, at 1:01, we are fairly confident that this song is not explicit and is safe for all ages. Based on the duration of this song, this song duration is much smaller than the average song duration. The track order of this song in The Rennas's "Kids Sing Divine Mercy (Instruments Only)" album is number 2 out of 7. In terms of popularity, Hail Mary is currently unknown. Since there is more of a neutral sound being played, this makes the track somewhat danceable.
We consider the tempo marking of Hail Mary by The Rennas to be Andante (at a walking pace) because the track has a tempo of 105 テンポ, a half-time of 52テンポ, and a double-time of 210 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.
This song has a musical key of B♭ Major. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.