'Hello Mary Lou' was written by Gene Pitney, and performed by Ricky Nelson in 1961. It has been recorded by many groups including Led Zeppelin and Queen. The style of this arrangement is similar to the best-known version by Ricky Nelson. The song should have a moderate duple meter feeling, like an easy country two-step. On the second verse, be sure to feature the lead voice in the musical texture. At measure 41 allow the tenor to join the lead feature. Keep the tempo steady all the way through to the tag, but feel free to hod the last chord as long as you want for a strong ending. Four copies of the sheet music arrangement plus a CD featuring the full performance plus part-predominant tracks (Tenor, Lead, Baritone, Bass), sung with lyrics.