In honor of my birthday (and yours, whenever it may be),  I've published my harp arrangements of the definitive birthday song, "Happy Birthday to You". 
There are Easy, Early Intermediate, and Intermediate Solo arrangements included in the keys of C and G, for a total of 6 arrangements.

The Easy versions have a range of only 18 strings, and the Early Intermediate versions require 21 strings. So these arrangements will fit on most smaller harps.

The key of G versions require an F-natural for the final note of the "and many more" phrase, and the key of C versions require a B-flat.  These levers are pre-set in the Easy and Early Intermediate versions.  The "and many more" phrase may be omitted if you don't have the levers needed.

The Intermediate Solo versions have additional measures of arpeggios, and so they do not work well if people are singing along.  This is why I list them as "solo" arrangements. They require 1 lever or pedal change before the final chord. The range needed for these solo arrangements are 32 or 33 strings.

Lyrics, chord symbols, and fingerings are included. There are 8 pages of music, plus one page of performance notes and important information.

You can see sample pages and listen to synthesized versions of all of these arrangements on the Happy Birthday to You page.